@article{ZNSL_1980_96_a18,
     author = {P. Z. Mkrtychyan},
     title = {On the solvability of the first boundary value problem for quasilinear elliptic equations of a~higher order degenerating with respect to the arguments},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {187--204},
     publisher = {mathdoc},
     volume = {96},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_96_a18/}
}