1. A characterization of the Laguerre polynomials;Abdul-Hakim,1964
2. On certain generating functions for the Hermite polynomials;Al-Salam;Portugal. Math.,1966
3. Generalized Sheffer polynomials;Al-Salam;Duke Math. J.,1970
4. Some characterizations of the Laguerre and Hermite polynomials;Al-Salam;Michigan Math. J.,1963
5. Operational derivation of some formulas for the Hermite and Laguerre polynomials;Al-Salam;Bull. UMI,1963