@article{DE_1985_21_11_a11,
     author = {V. N. Aref'ev},
     title = {Elliptic problems with discontinuous coefficients in the boundary operators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1940--1947},
     publisher = {mathdoc},
     volume = {21},
     number = {11},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_11_a11/}
}