Rook Theoretic Proofs Of Some Identities Related To Spivey's Bell Number Formula. - Roberto B. Corcino; Richell O. Celeste; Ken Joffaniel M. Gonzales (Ars Comb., 2017)

Two Approaches to Normal Order Coefficients. - Richell O. Celeste; Roberto B. Corcino; Ken Joffaniel M. Gonzales (J. Integer Seq., 2017)