TY - JOUR AU - A. V. Dmitruk AU - N. P. Osmolovskii TI - Variations of the $v$-change of time in problems with state constraints JO - Trudy Instituta matematiki i mehaniki PY - 2018 SP - 76 EP - 92 VL - 24 IS - 1 UR - http://geodesic.mathdoc.fr/item/TIMM_2018_24_1_a7/ LA - ru ID - TIMM_2018_24_1_a7 ER -