@article{DE_1968_4_6_a13,
     author = {N. I. Brisch and N. J. Yurchuk},
     title = {Certain new boundary value problems for a certain kind of partial differential equations. {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1081--1101},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_6_a13/}
}