1. Handbook of Mathematical Functions,1972
2. Number Theory;Andrews,1971
3. A Combinatorial Interpretation of the Legendre–Stirling Numbers;Andrews;Proc. Amer. Math. Soc.,2009
4. L. Comtet, Nombres de Stirling généraux et fonctions symétriques, C. R. Acad. Sc. Paris, t. 275, pp. 747–750.
5. Advanced Combinatorics: The Art of Finite and Infinite Expansions;Comtet,1974