@article{DE_1978_14_8_a2,
     author = {B. Mordukhovich and A. M. Sasonkin},
     title = {On the theory of duality in control systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1371--1380},
     publisher = {mathdoc},
     volume = {14},
     number = {8},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_8_a2/}
}