@article{TRSPY_1980_147_a2,
     author = {A. V. Ivanov and P. Z. Mkrtychyan},
     title = {Solvability of the first boundary value problem for some classes of second-order degenerate quasilinear elliptic equations},
     journal = {Informatics and Automation},
     pages = {14--39},
     publisher = {mathdoc},
     volume = {147},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1980_147_a2/}
}