TY - JOUR AU - B. D. Gel'man TI - A generalization of Kakutani’s fixed-point theorem to many-valued mappings JO - Doklady Akademii Nauk PY - 1973 SP - 22 EP - 24 VL - 209 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1973_209_1_a3/ LA - ru ID - DAN_1973_209_1_a3 ER -