On the numerical construction of formal powers and their application to the Electrical Impedance Equation. - R. Ariana Bucio; Raúl Castillo-Pérez; T. Marco P. Ramirez (CCE, 2011)

A simplified method for numerically solving the Impedance Equation in the plane. - R. Ariana Bucio; Raúl Castillo-Pérez; T. Marco P. Ramirez; Cesar Marco Antonio Robles (CCE, 2012)

Spectral parameter power series for perturbed Bessel equations. - Raúl Castillo-Pérez; Vladislav V. Kravchenko; Sergii M. Torba (Appl. Math. Comput., 2013)