@article{DE_1995_31_3_a13,
     author = {E. A. Kalita},
     title = {Higher-order degenerate nonlinear elliptic equations of {Cordes} type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {492--497},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_3_a13/}
}