TY - JOUR AU - K. S. Musabekov TI - Existence of a solution to a system of equations in variations in an optimal control problem JO - Sibirskij žurnal industrialʹnoj matematiki PY - 2021 SP - 48 EP - 66 VL - 24 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SJIM_2021_24_1_a3/ LA - ru ID - SJIM_2021_24_1_a3 ER -