A Mathematica program for the two-step twelfth-order method with multi-derivative for the numerical solution of a one-dimensional Schrödinger equation. - Zhongcheng Wang; Yonghua Ge; Yongming Dai; Deyin Zhao (Comput. Phys. Commun., 2004)

Importance of the first-order derivative formula in the Obrechkoff method. - Deyin Zhao; Zhongcheng Wang; Yongming Dai (Comput. Phys. Commun., 2005)