TY - JOUR AU - V. M. Kadets AU - M. I. Kadets TI - Conditions for convexity of the set of limits of Riemann sums of a vector-valued function JO - Matematičeskie zametki PY - 1984 SP - 161 EP - 167 VL - 35 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1984_35_2_a3/ LA - ru ID - MZM_1984_35_2_a3 ER -