TY - JOUR AU - M. G. Dmitriev TI - The theory of singular perturbations and some optimal control problems JO - Differencialʹnye uravneniâ PY - 1985 SP - 1693 EP - 1698 VL - 21 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1985_21_10_a4/ LA - ru ID - DE_1985_21_10_a4 ER -