TY - JOUR AU - P. V. Semenov TI - Fixed-point theorems for a~controlled withdrawal of the convexity of the values of a~set-valued map JO - Sbornik. Mathematics PY - 1998 SP - 461 EP - 480 VL - 189 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1998_189_3_a6/ LA - en ID - SM_1998_189_3_a6 ER -