@article{DE_1968_4_9_a2,
     author = {R. Gabasov},
     title = {On the control theory of dynamical systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1574--1583},
     publisher = {mathdoc},
     volume = {4},
     number = {9},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_9_a2/}
}