@article{DE_2002_38_3_a21,
     author = {G. A. Sviridyuk and N. A. Manakova},
     title = {Regular {Perturbations} of a {Class} of {Sobolev} {Type} {Linear} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {423--425},
     publisher = {mathdoc},
     volume = {38},
     number = {3},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_3_a21/}
}