TY - JOUR AU - N. G. Dokuchaev TI - Existence of optimal controls and necessary conditions for optimality for partially observable diffusion processes JO - Differencialʹnye uravneniâ PY - 1994 SP - 1498 EP - 1507 VL - 30 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1994_30_9_a2/ LA - ru ID - DE_1994_30_9_a2 ER -