@article{DE_1977_13_9_a12,
     author = {I. E. Mozolevski},
     title = {The joining together of degenerate elliptic {equations.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1667--1677},
     publisher = {mathdoc},
     volume = {13},
     number = {9},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_9_a12/}
}