@article{DE_1975_11_6_a8,
     author = {V. F. Butuzov},
     title = {The asymptotic behavior of the solutions of singularly perturbed equations of elliptic type in a rectangular domain},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1030--1041},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_6_a8/}
}