@article{DE_1977_13_7_a19,
     author = {L. I. Minchenko},
     title = {Sufficient optimality conditions for difference inclusions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1320--1324},
     year = {1977},
     volume = {13},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_7_a19/}
}