TY - JOUR AU - A. A. Tolstonogov TI - Existence of an~optimal control without convexity assumptions in a~first-order evolution system JO - Sbornik. Mathematics PY - 2001 SP - 1381 EP - 1398 VL - 192 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2001_192_9_a5/ LA - en ID - SM_2001_192_9_a5 ER -