@article{DE_1990_26_3_a1,
     author = {S. A. Brykalov},
     title = {A quasilinear boundary value problem in the case of nondegeneracy of the homogeneous problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {374--381},
     publisher = {mathdoc},
     volume = {26},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_3_a1/}
}