1. Orthogonal Polynomials and Special Functions;Askey,1975
2. Orthogonal polynomials and a discrete boundary value problem II;Szwarc;SIAM J. Math. Anal.,1992
3. Modified Clebsch–Gordan-type expansions for products of discrete hypergeometric polynomials;Álvarez-Nodarse;J. Comput. Appl. Math.,1998
4. S. Lewanowicz, The hypergeometric function approach to the connection problem for the classical orthogonal polynomials, Tech. report, Inst. Computer Sci, Univ. of Wroclaw, Feb. 1998.
5. Generalized linearization problems;Ronveaux;J. Phys. A: Math. Gen.,1995