@article{DE_1994_30_4_a13,
     author = {V. M. Filippov},
     title = {A generalization of the {A.} {Vanderbauwhede} variational principle},
     journal = {Differencialʹnye uravneni\^a},
     pages = {692--698},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_4_a13/}
}