@article{GDZPPN002108224,
title = {An elementary approach to the hypergeometric shift operators of Opdam.},
journal = {Inventiones mathematicae},
volume = {104},
year = {1991},
pages = {341-350},
zbl = {0721.33009},
url = {http://dml.mathdoc.fr/item/GDZPPN002108224}
}
Heckman, G.J. An elementary approach to the hypergeometric shift operators of Opdam.. Inventiones mathematicae, Tome 104 (1991) pp. 341-350. http://gdmltest.u-ga.fr/item/GDZPPN002108224/