Mrm. Witwit, PERTURBATIVE AND NONPERTURBATIVE CALCULATION OF EIGENVALUES FOR VARIOUS IMPORTANT QUANTUM-SYSTEMS, Indian Journal of Pure & Applied Physics, 32(4), 1994, pp. 291-307
The energy levels of the Schrodinger equation for various types potent
ials have been calculated by using a finite difference and renormalize
d series methods for wide range values of perturbation parameters. The
obtained results aye compared with previously available results.