TY - JOUR AU - V. E. Mirakov TI - On the question of improving a~theorem of Vallee--Poussin with the help of the Pontryagin maximum principle JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1987 SP - 158 EP - 159 VL - 180 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1987_180_a93/ LA - ru ID - TM_1987_180_a93 ER -