Article 01.1.4:
J.-M. Sixdeniers, K. A. Penson and A. I. Solomon,
"Extended Bell and Stirling Numbers From Hypergeometric Exponentiation"
(Abstract,
pdf,
ps,
dvi,
latex)
Article 01.1.8:
Darrin D. Frey and James A. Sellers,
"On Powers of 2 Dividing the Values of Certain Plane Partition Functions"
(Abstract,
pdf,
ps,
dvi,
latex)