TY - JOUR AU - V. G. Boltyanskii TI - On the proof of the maximum principle for objects with continuous time JO - Differencialʹnye uravneniâ PY - 1973 SP - 1747 EP - 1753 VL - 9 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1973_9_10_a0/ LA - ru ID - DE_1973_9_10_a0 ER -