@article{TM_1987_180_a93,
     author = {V. E. Mirakov},
     title = {On the question of improving a~theorem of {Vallee{\textendash}Poussin} with the help of the {Pontryagin} maximum principle},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {158--159},
     year = {1987},
     volume = {180},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1987_180_a93/}
}