[1] P. Blasiak, K. A. Penson and A. I. Solomon, The normal ordering
general boson problem, Phy. Lett. A 309 (2003), 198-205.
[2] P. Blasiak, Combinatorics of Boson Normal Ordering and Some
Applications, PhD., 2005.
[3] N. P. Cakic, On some combinatorial identities, Univ. Beograd Publ.
Elektrotehn. Fak. Ser. Mat. Fiz. 678-715 (1980), 91-94.
[4] N. P. Cakic, On the numbers related to the Stirling numbers of the
second kind, Facta Universitatis (Nis), Ser., Math. Inform. 22(2)
(2007), 105-108.
[5] L. Carlitz, On arrays of numbers, Amer. J. Math. 54 (1932),
739-752.
[6] Ch. Charalambides and J. Singh, A review of the Stirling numbers,
their generalization and statistical applications, Commun. Statist.
Theory Methods 17 (1988), 2533-2595.
[7] Ch. Charalambides, Enumerative Combinatorics, Chapman and
Hall/CRC, 2002.
[8] L. Comtet, Nombres de Stirling generaux et fonctions symetriques,
C. R. Acad. Sci. Paris (Ser. A) 275 (1972), 747-750.
[9] L. Comtet, Une formule explicite pour puissances successive de
operateur derivation de Lie, C. R. Acad. Paris, t. 276, Serie A
(1973), 165-168.
[10] L. Comtet, Advanced Combinatorics: The Art of Finite and Infinite
Expiations, D. Reidel Publishing Company, Dordrecht, Holland, 1974.
[11] B. S. El-Desouky, Multiparameter non-central Stirling numbers,
The Fibonacci Quarterly 32(3) (1994), 218-225.
[12] B. S. El-Desouky, Nenad P. Cakic and Toufik Mansour, Modified
approach to generalized Stirling numbers via differential operators,
Appl. Math. Lett. 23 (2010), 115-120.
[13] H. W. Gould, The operator and Stirling numbers of the first kind,
Amer. Math. Monthly 71 (1964), 850-858.
[14] R. M. Wilcox, Exponential operators and parameter differentiation
in quantum physics, J. Math. Phys. 8 (1967), 962-982.