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@article{DE_1972_8_5_a14, author = {E. M. Polishchuk}, title = {Certain new connections of control systems with equations of mathmatical {physics.~II}}, journal = {Differencialʹnye uravneni\^a}, pages = {857--870}, publisher = {mathdoc}, volume = {8}, number = {5}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1972_8_5_a14/} }
E. M. Polishchuk. Certain new connections of control systems with equations of mathmatical physics.~II. Differencialʹnye uravneniâ, Tome 8 (1972) no. 5, pp. 857-870. http://geodesic.mathdoc.fr/item/DE_1972_8_5_a14/