Paper Citation Record · LEDGER

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching

As of 16 August 2026, this Paper Citation Record lists 51 of 51 outbound references and 0 inbound Pith citation observations for arXiv:2608.13096.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2608.13096 v1

Coverage vector

measured 51 of 51 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-15T16:56:22.171582Z

measured 51 of 51 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-16T06:30:59.297886+00:00

measured 0 of 0 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: cited_works

Reference resolution

51 of 51 outbound references displayed

verified exact5
verified fuzzy3
unresolved43
parse uncertain0
malformed identifier0
metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 5ca6a4c6-ec09-4ab9-8ac5-de07e64e775f · outbound

This paper cites Stochastic Interpolants: A Unifying Framework for Flows and Diffusions.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Stochastic Interpolants: A Unifying Framework for Flows and Diffusions

Reference 1

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.750751Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e598caef-55d0-4e21-8308-ccbf24b3f923 · outbound

This paper cites Painting the market: generative diffusion models for financial limit order book simulation and forecasting.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Painting the market: generative diffusion models for financial limit order book simulation and forecasting

Reference 2

Resolution: verified exact; local_arxiv, observed 2026-08-15T16:56:23.192978Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 66069ba3-e819-4636-ab7a-50f894b2f0d5 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 3

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.483597Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 669e9b62-543b-457b-9453-c4df5acdaf32 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 4

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.775616Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e2b21ca2-bd39-48cb-bab6-86fc5b1cb171 · outbound

This paper cites Deep Hedging.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Deep Hedging

Reference 5

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.780982Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation cd5a4160-d35e-472a-864e-4777d4180805 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 6

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.467551Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 7e25e338-3ac8-4c42-a344-09be53cfb047 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 7

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.451538Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 049abbd6-79af-47e5-bcaf-e905446913ac · outbound

This paper cites Towards Realistic Market Simulations: a Generative Adversarial Networks Approach.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Towards Realistic Market Simulations: a Generative Adversarial Networks Approach

Reference 8

Resolution: verified exact; local_arxiv, observed 2026-08-15T16:56:23.050214Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 47901886-702c-4135-b4b8-fb38fd126a51 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 9

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.435085Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 1eb84378-34b9-4495-8451-393f9a9e6dee · outbound

This paper cites Diffusion Models Beat GANs on Image Synthesis.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Diffusion Models Beat GANs on Image Synthesis

Reference 10

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.816206Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 485ab144-20a0-4d99-a8c4-02659cd464af · outbound

This paper cites Scaling Rectified Flow Transformers for High-Resolution Image Synthesis.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Scaling Rectified Flow Transformers for High-Resolution Image Synthesis

Reference 11

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.822092Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 88aee257-1e1b-49cc-8c19-10bf16c6ba9b · outbound

This paper cites Doyne Farmer, Paolo Patelli, and Ilija I.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Doyne Farmer, Paolo Patelli, and Ilija I

Reference 12

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T16:56:23.418191Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 75791aa6-dfbc-4863-8a21-87b3cdaefae6 · outbound

This paper cites Gode and Shyam Sunder.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Gode and Shyam Sunder

Reference 13

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T16:56:23.401082Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 2e217171-1bf7-4d01-9437-fa4d7fd640bd · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 14

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.841107Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation c83cc10d-a899-4756-9a63-234ceb8e66f6 · outbound

This paper cites Denoising Diffusion Probabilistic Models.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Denoising Diffusion Probabilistic Models

Reference 15

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.847263Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ac8cdbd0-14d0-4607-ae73-724110e2e92b · outbound

This paper cites Classifier-Free Diffusion Guidance.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Classifier-Free Diffusion Guidance

Reference 16

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.856283Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 62d0bbcf-c7b1-47b8-8cb5-a7223cd9db7b · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 17

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.862983Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 935e0391-ff6c-43b2-bedd-b301a845f013 · outbound

This paper cites FlowTS: Time Series Generation via Rectified Flow.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching FlowTS: Time Series Generation via Rectified Flow

Reference 18

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.868523Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation dce829af-c223-4b0d-949e-f7b872e1bbff · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 19

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.875095Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation bf319e6d-96cb-4e5d-965b-57f5aac4f596 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 20

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.385209Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 3ef211d0-70a5-4c6d-865f-91bc67300d62 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 21

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.367839Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 419db946-a9e6-4267-80f9-28db7a205e68 · outbound

This paper cites Elucidating the Design Space of Diffusion-Based Generative Models.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Elucidating the Design Space of Diffusion-Based Generative Models

Reference 22

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.890806Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 70413be5-3039-481d-855f-bc27d7808772 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 23

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.895655Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 90839575-d781-4385-83e9-7f59a02f400e · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 24

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.352125Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 7ca493bf-385c-4235-901c-4eeb0c1e61f4 · outbound

This paper cites ByteGen: A Tokenizer-Free Generative Model for Orderbook Events in Byte Space.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching ByteGen: A Tokenizer-Free Generative Model for Orderbook Events in Byte Space

Reference 25

Resolution: verified exact; local_arxiv, observed 2026-08-15T16:56:22.663946Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 2c229681-2964-4e12-820a-ac698091daa6 · outbound

This paper cites FlowHFT: Imitation Learning via Flow Matching Policy for Optimal High-Frequency Trading under Diverse Market Conditions.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching FlowHFT: Imitation Learning via Flow Matching Policy for Optimal High-Frequency Trading under Diverse Market Conditions

Reference 26

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.917189Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 8f2e6e92-6a7d-49cb-92d9-208a3c27ae77 · outbound

This paper cites Flow Matching for Generative Modeling.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Flow Matching for Generative Modeling

Reference 27

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.922831Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 40dee0c7-80d5-47f0-a840-2ee399564cd5 · outbound

This paper cites Flow Straight and Fast: Learning to Generate and Transfer Data with Rectified Flow.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Flow Straight and Fast: Learning to Generate and Transfer Data with Rectified Flow

Reference 28

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.928593Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation dee1ebb0-64e7-4ae2-b279-7a2c47c6d735 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 29

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.934231Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 92669a70-5a8a-483a-9b3d-b7950b941fde · outbound

This paper cites Generative AI for End-to-End Limit Order Book Modelling: A Token-Level Autoregressive Generative Model of Message Flow Using a Deep State Space Network.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Generative AI for End-to-End Limit Order Book Modelling: A Token-Level Autoregressive Generative Model of Message Flow Using a Deep State Space Network

Reference 30

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.943983Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation a2ef887f-763c-4efa-835f-c2f60b91fe6a · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 31

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.295782Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 3d1ce80b-b3bc-42bb-bc90-8cef3b204f71 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 32

Resolution: unresolved; raw_fallback, observed 2026-08-15T16:56:23.278038Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation b46af6e6-54e4-4713-a910-acc929b083ea · outbound

This paper cites Scalable Diffusion Models with Transformers.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Scalable Diffusion Models with Transformers

Reference 33

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.085113Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 728ad94a-eef6-4313-a6f2-da515dd64adb · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 34

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.091575Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation fe9b4b20-3c8a-4368-a859-60089ad14a00 · outbound

This paper cites Synthetic Data Applications in Finance.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Synthetic Data Applications in Finance

Reference 35

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.096409Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ca2a3a41-6631-4073-8050-7cee5ddeb681 · outbound

This paper cites Weiss, Niru Maheswaranathan, and Surya Ganguli.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Weiss, Niru Maheswaranathan, and Surya Ganguli

Reference 36

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.101666Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f4a2cd1e-be3e-4ac6-bf3e-ea2190f97990 · outbound

This paper cites Denoising Diffusion Implicit Models.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Denoising Diffusion Implicit Models

Reference 37

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.111700Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 7ddfdb11-1466-4b42-9466-f5b6e1a718dd · outbound

This paper cites Consistency Models.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Consistency Models

Reference 38

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.116986Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ab92cc8c-dcbd-409b-846e-0ee1c7515a7a · outbound

This paper cites Generative Modeling by Estimating Gradients of the Data Distribution.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Generative Modeling by Estimating Gradients of the Data Distribution

Reference 39

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.122479Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ffb14991-8946-4174-88fa-fc26eb527f5b · outbound

This paper cites Score-Based Generative Modeling through Stochastic Differential Equations.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Score-Based Generative Modeling through Stochastic Differential Equations

Reference 40

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.128372Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation d7225b86-dcbe-411f-8ca9-61147a06794c · outbound

This paper cites CoFinDiff: Controllable Financial Diffusion Model for Time Series Generation.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching CoFinDiff: Controllable Financial Diffusion Model for Time Series Generation

Reference 41

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.134175Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 18d8b9bf-6db0-4adf-8c3f-fe50608631ad · outbound

This paper cites Get Real: Realism Metrics for Robust Limit Order Book Market Simulations.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Get Real: Realism Metrics for Robust Limit Order Book Market Simulations

Reference 42

Resolution: verified exact; local_arxiv, observed 2026-08-15T16:56:22.430712Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 99280ac8-f91f-4a5f-a9b4-a8b7c9ee703a · outbound

This paper cites DiffVolume: Diffusion Models for Volume Generation in Limit Order Books.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching DiffVolume: Diffusion Models for Volume Generation in Limit Order Books

Reference 43

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.145726Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation abc922d4-91ee-4016-b4f8-50613908a54d · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 44

Resolution: verified exact; raw_fallback, observed 2026-08-15T16:56:22.385643Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation c0be9a6f-7caa-410b-adec-00de310bca1f · outbound

This paper cites Quant GANs: Deep Generation of Financial Time Series.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Quant GANs: Deep Generation of Financial Time Series

Reference 45

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.156511Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e217d5c3-48fe-409a-b5a8-a1e84ec98d97 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 46

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.161724Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation b5531c10-79e3-4c5c-a7a7-3801ee3c436e · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 47

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.166447Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 5cf3b2a8-8350-4e76-97cb-65d7028bd4e2 · outbound

This paper cites Limit Order Book Event Stream Prediction with Diffusion Model.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Limit Order Book Event Stream Prediction with Diffusion Model

Reference 48

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.171582Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 43159cd5-2b2c-4fc4-92dc-1b22cb77ffcd · outbound

This paper cites Deep Unsupervised Learning using Nonequilibrium Thermodynamics.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Deep Unsupervised Learning using Nonequilibrium Thermodynamics

Reference 2015

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:22.106552Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 47ab50dd-282b-41e7-8d42-5cd5d0cab4d7 · outbound

This paper cites InProceedings of the AAAI Conference on Artificial Intelligence, Vol.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching InProceedings of the AAAI Conference on Artificial Intelligence, Vol

Reference 2020

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T16:56:23.336368Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

Observation 59b66d4a-7ad3-4c18-a54a-345d75aff3d5 · outbound

This paper cites an unresolved cited work.

FlowLOB: Efficient and Controllable Limit Order Book Generation with Flow Matching Unresolved cited work

Reference 2022

Resolution: unresolved; no resolver link, observed 2026-08-15T16:56:21.939346Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Pith citing papers

No inbound Pith citation observations are available.