@article{DE_1977_13_4_a5,
     author = {N. J. Yurchuk},
     title = {L\"osbarkeit von {Randwertproblemen} f\"ur einige {Operator-} {Differentialgleichungen}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {626--636},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_4_a5/}
}