@article{DE_1972_8_2_a14,
     author = {E. M. Polishchuk},
     title = {Some new relations between control systems and equations of mathematical {physics.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {333--348},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_2_a14/}
}