On solutions of the Schr\"{o}dinger equation for some molecular potentials: Power-series method

We show that the standard power-series method described in many textbooks of quantum-mechanics and quantum-chemistry is simpler and more powerful than the wavefunction approach proposed by Ikhdair and Sever [Cent. Eur. J. Phys. 6, 697 (2008)]. As illustrative examples we choose the pseudoharmonic and Kratzer-Fues potentials already treated by those authors.