1. Fonctions hypergéométriques et hypersphériques;Appell,1926
2. Introduction to Matrix Analysis;Bellman,1997
3. An Introduction to Orthogonal Polynomials;Chihara,1978
4. Rodrigues formulas and the classical orthogonal polynomials;Cryer;Boll. Unione Mat. Ital. (3),1970
5. Orthogonal Polynomials of Several Variables;Dunkl,2001