@article{DAN_1991_317_4_a17,
     author = {G. I. Shishkin},
     title = {Difference approximation of a singularly perturbed quasilinear},
     journal = {Doklady Akademii Nauk},
     pages = {845--849},
     publisher = {mathdoc},
     volume = {317},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_317_4_a17/}
}