TY - JOUR AU - M. M. Khapaev TI - Singular differential equations in control and minimization problems JO - Informatics and Automation PY - 1995 SP - 411 EP - 418 VL - 211 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1995_211_a28/ LA - ru ID - TRSPY_1995_211_a28 ER -