TY - BOOK AU - Tarasov, V. AU - Varchenko, A. TI - Geometry of $q$-hypergeometric functions, quantum affine algebras and elliptic quantum groups T3 - Astérisque PY - 1997 IS - 246 PB - Société mathématique de France UR - http://archive.numdam.org/item/AST_1997__246__R1_0/ LA - en ID - AST_1997__246__R1_0 ER -