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: 1095-855X
Original Titel:
qMultiSum - A Package for Proving q-Hypergeometric Multiple Summation Identities