PHYSICA SCRIPTA, vol.67, no.6, pp.472-475, 2003 (SCI-Expanded)
Using the NU method [A. F. Nikiforov and V. B. Uvarov, "Special Functions of Mathematical Physics, Birkhauser," Basel, 1988], we investigated the real eigenvalues of the complex and/or PT-symmetric, non-Hermitian and the exponential type systems, such as Poschl-Teller and Morse potentials.