TY - JOUR AU - A. V. Pukhlikov TI - Liouville's theorem in optimal control problems JO - Differencialʹnye uravneniâ PY - 1994 SP - 1958 EP - 1965 VL - 30 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1994_30_11_a12/ LA - ru ID - DE_1994_30_11_a12 ER -