@article{DE_1984_20_12_a20,
     author = {Yu. V. Egorov and Nguyen Minh Chuong},
     title = {A problem with a directional derivative in {S.\,L.~Sobolev} spaces of variable order},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2163--2164},
     publisher = {mathdoc},
     volume = {20},
     number = {12},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_12_a20/}
}