Axel Riese,
"qMultiSum - A Package for Proving q-Hypergeometric Multiple Summation Identities"
, in Journal of Symbolic Computation, Vol. 35, Seite(n) 349-376, 2003, ISSN: 0747-7171
Original Titel:
qMultiSum - A Package for Proving q-Hypergeometric Multiple Summation Identities