@article{DE_1991_27_6_a6,
     author = {E. N. Makhmudov},
     title = {Sufficient conditions for optimality on a nonfixed time interval for differential inclusions with delay, and duality},
     journal = {Differencialʹnye uravneni\^a},
     pages = {964--969},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_6_a6/}
}