@article{DAN_1979_249_3_a10,
     author = {A. A. Khasanov},
     title = {On the asymptotics of the solution of a two-parameter singularly perturbed problem in the critical case},
     journal = {Doklady Akademii Nauk},
     pages = {559--562},
     publisher = {mathdoc},
     volume = {249},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_249_3_a10/}
}