@article{ZVMMF_1992_32_4_a4,
     author = {G. I. Shishkin},
     title = {A difference approximation of a singularly perturbed boundary-value problem for quasilinear elliptic equations degenerating into first-order equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {550--566},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1992_32_4_a4/}
}