%0 Journal Article %A I. M. Gel'fand %A M. I. Graev %T $GG$-functions and their relation to general hypergeometric functions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1997 %P 639-684 %V 52 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1997_52_4_a0/ %G en %F RM_1997_52_4_a0