Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-11T14:16:31.828209Z
Paper Citation Record · LEDGER
As of 21 August 2026, this Paper Citation Record lists 72 of 72 outbound references and 0 inbound Pith citation observations for arXiv:2412.12329.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-11T14:16:31.828209Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-21T06:32:19.484+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
72 of 72 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 46a1ecd4-8e37-4289-a477-4101a71b3f2a · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 57535a0a-a9c0-459e-ac7a-2bb60703b19c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1af0004a-1b11-4186-8f53-f0f255d0f9b3 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation a5d881bf-8847-4cf3-997e-723516199e66 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Kutty, M
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation fac64620-7140-469f-a04c-cf736d741e02 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2c2070f4-ec11-4e8e-b2f6-59589867ce95 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ 1450 (INTERNATIONAL ATOMIC ENERGY AGENCY, Vienna, 2005)
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation bb94f1b3-a5df-4999-8ab1-49e7020f4f72 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation a33c07c5-a706-414a-a6a9-43fab13a5b43 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Malakkal, A
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9c93586d-bee2-4444-b3d3-b46a08690551 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Worrall, N
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 4e2208a3-3239-45bb-a740-0aec9f727bed · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 7c57bad8-96d8-4c3b-9526-dbc3f5917b23 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 815076d1-e083-450c-ac3b-433e9bd7c53c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Kawano, J
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 25a3f21f-9d62-40d0-b465-bd01f3c46e20 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c20a7c05-242e-47cc-b2d7-28c1feb74868 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Magni, A
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f97a7002-b276-4ccc-ba10-03cb6b91774e · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Intro ¨ ıni, I
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 08047d82-8739-4015-9c04-f982f3fd69b5 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Van Uffelen, J
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 674a1334-2fc3-4d4e-a718-754fc087f45c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Lucuta, H
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1b679038-6bc2-44e2-8605-5baa432c3a01 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Ferrigno, T
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation e307631c-791c-46ad-9317-d0cf4f8cd2e5 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Magni, T
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 6b854f0d-35cc-46b7-ada2-5d0158cc6f57 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Ferrigno, S
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 43f649f2-485f-4d5e-82a3-078cacdb11ec · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 62687861-dd72-4e56-b7b0-af0125b42380 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 54fa42e4-1e79-4d04-adf9-dead8ddee9d7 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3b6f1e89-ddc7-4ef4-9918-f595dc7c199d · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation fe8782ff-3868-4ccf-a4fe-04a4986218fb · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Bonev, N
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 95a1edb7-2ccf-43dc-8f78-af3c4fe7ce40 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Horii, S
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 4d0fa4ef-695c-4dc2-9510-7f0157a8914f · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 047a3e66-8f98-49bd-9d1d-02d4ae758d17 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Khafizov, V
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation a08b4543-1059-48ef-8cd1-69e37565e175 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 29
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation e05bfd45-2e46-4def-b7bd-2c015cb14cce · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9be93343-d30c-4617-948d-c350da057575 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Ronchi, M
Reference 31
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 418a4547-4c2a-47cb-8421-944a029c8e92 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 8acb8d9a-e27f-43c2-82ea-5157afc0df7e · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Malakkal, A
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 972d9a28-f4eb-4288-9f41-cbc9e7dd4d6f · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Saoudi, D
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1fdee15b-188e-43d5-bb67-f06c5a99ad12 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Turnbull, C
Reference 36
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9e162d44-82c8-4436-a065-710d67ab0576 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Cooper, S
Reference 37
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 43a9250c-1b7b-4a26-ba4b-e9beaf6c4fe8 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 38
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f7aba79a-2378-4964-a414-4fc431d9322c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Rahman, B
Reference 39
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c7d2228d-c2b4-4bc0-a704-5af24062248c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 40
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation db661710-96ff-4600-a856-21d795a9ea1c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 41
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2fec2e7c-34bd-489c-9cdf-e687fdc525e0 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 42
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1a4f6fd5-d007-4772-b276-ea6ee97febf6 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ To overcome these limitations, Malakkal et al
Reference 43
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation b0ed5a8f-e982-412a-8640-6a2c31db3ab5 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 44
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f2a6b538-5c2d-4353-806f-f27ba20f5570 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 45
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 87ad23e6-da77-422a-b2c6-179d11d309d3 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 46
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation da54133f-d41f-4821-93af-39c3fca860a7 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 47
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3ab6da0f-70e1-4063-8038-1f4ecfd24c99 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 48
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 8e7f32ac-b157-4acd-974a-c3a8aaecf783 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 49
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation ce0d4bf1-be49-49bc-b7a0-9542991e1fbf · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 50
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f3ef6cc6-ecb1-47d3-b896-69c09505f922 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Kohn and L
Reference 51
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 0eed3260-5dfd-40b6-aa01-04d8275c5d67 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 52
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5b72ddcd-2b65-4192-b42e-2bc3b8aacd23 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Kresse and J
Reference 53
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5e201344-590f-478a-a04b-aab17c8f46ae · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 54
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 0f0d07a8-85df-415a-978f-0dd2fc0522f1 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 55
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 10b3c58a-f5c9-404c-8804-5456d6faa716 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 56
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 36ffe413-31d6-4434-9b39-ddd913674178 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 57
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f3abf1f8-5953-42d5-87e1-12b65ddf0a6c · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Togo and I
Reference 58
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 954d89d6-3674-4276-9838-cc5f65e8a170 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 59
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation ff5dca29-5273-4692-99cc-a149b1a9ab80 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 60
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 6c187dd8-ec87-4726-b7c4-d6b9e6650371 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Baroni, S
Reference 61
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 8cfb7bd7-9b17-4d26-b4c4-f88d516c7859 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Tamura, Isotope scattering of dispersive phonons in Ge, Phys
Reference 62
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 11d2487c-6434-4b1f-8e31-88e3bd5bf6ba · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Katre, J
Reference 63
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation a5d8bf02-048a-42d8-947e-0565b5b1204a · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 64
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation b20af8f7-6f9a-40fd-b2bc-bf0475b0a4e4 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 65
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 14d369eb-bd23-4fb4-9ac1-bf29fb4a38bf · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Rickert, T
Reference 66
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 659b745d-a219-4cd7-9adc-a4cb3e79682b · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 67
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c2e10b33-74ce-4da8-9e0e-aac08e636556 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 68
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2107f665-2c42-471e-8135-06ad641272f8 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Fukushima, T
Reference 69
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation b30f9124-34ad-41f0-8778-55ce4a7d6672 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Duriez, J.-P
Reference 70
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 401a59fc-ff92-419a-8cdf-7122c6bd7ca8 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 71
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2b0fa26c-2f17-4400-8d45-a627541d2cb4 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Thermal conductivity suppression in uranium-doped thorium dioxide due to phonon resonant scattering
Reference 72
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 56eda601-1d55-42ca-9d0f-10df1e0f81e7 · outbound
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO$_2$ Unresolved cited work
Reference 73
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
No inbound Pith citation observations are available.