@article{01120233,
title = {A generalization of Gosper's algorithm to bibasic hypergeometric summation.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {3},
year = {1996},
zbl = {0885.33012},
language = {en},
url = {http://dml.mathdoc.fr/item/01120233}
}
Riese, Axel. A generalization of Gosper's algorithm to bibasic hypergeometric summation.. The Electronic Journal of Combinatorics [electronic only], Tome 3 (1996) . http://gdmltest.u-ga.fr/item/01120233/