1. Why Delannoy numbers?
2. Exponential Polynomials
3. L. Comtet, Advanced combinatorics: The art of finite and infinite expansions, (D. Reidel Publishing Company, Dordrecht/Boston, 1974).
4. H. W. Gould, Combinatorial numbers and associated identities: Table 1: Stirling numbers, Volume 7, (Edited and Compiled by Jocelyn Quaintance, May 3, 2010).
5. Certain Finite Sums Pertaining to Leibnitz, Harmonic and Other Special Numbers