TY - JOUR AU - G. E. Ivanov TI - A saddle-point theorem for strongly and weakly convex functions JO - Izvestiya. Mathematics PY - 2011 SP - 73 EP - 100 VL - 75 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2011_75_1_a3/ LA - en ID - IM2_2011_75_1_a3 ER -