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@article{DAN_1987_296_1_a8, author = {G. I. Shishkin}, title = {Approximation of the solutions of singularly perturbed boundary}, journal = {Doklady Akademii Nauk}, pages = {39--43}, publisher = {mathdoc}, volume = {296}, number = {1}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_1_a8/} }
G. I. Shishkin. Approximation of the solutions of singularly perturbed boundary. Doklady Akademii Nauk, Tome 296 (1987) no. 1, pp. 39-43. http://geodesic.mathdoc.fr/item/DAN_1987_296_1_a8/