@article{ZVMMF_1991_31_4_a4,
     author = {V. F. Butuzov and V. Yu. Buchnev},
     title = {The asymptotic behaviour of the solution of a singularly perturbed two-dimensional problem of the},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {533--542},
     publisher = {mathdoc},
     volume = {31},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1991_31_4_a4/}
}