TY - JOUR AU - A. D. Myshkis TI - Extremum of a function obtained by ordering two specified smooth functions JO - Matematičeskie zametki PY - 1994 SP - 66 EP - 73 VL - 55 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1994_55_1_a7/ LA - ru ID - MZM_1994_55_1_a7 ER -