Calculation of the spheroidal functions of the first kind for complex values of the argument and parameters
А. А. Абрамов, Е. Д. Калинин, С. В. Курочкин · Computational Mathematics and Mathematical Physics · 2015
Methods are proposed, first, for calculating (in a given domain of complex plane) the eigenvalues of the spheroidal wave equation with complex-valued parameters and, second, for calculating the values of the corresponding functions for complex values of the argument.