1. Journal of Computational and Applied Mathematics, Vol. 133, No. 1-2, pp. 1-706, 2001.

(Proceedings of the Fifth International Symposium on Orthogonal Polynomials, Special Functions and their Applications, Patras, Greece, 20-24 September, 1999 (Dedicated to Professor Theodore Chihara))  

2. International Conference on Differential, Difference Equations and Their Applications, Patras, Greece, 1-5 July, 2002.

Hindawi Publishing Corporation (November 2004), ISBN-10: 9775945143

(Dedicated to Professor Evangelos Ifantis)