%0 Journal Article %A V. F. Butuzov %T The asymptotic behavior of the solutions of singularly perturbed equations of elliptic type in a rectangular domain %J Differencialʹnye uravneniâ %D 1975 %P 1030-1041 %V 11 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_6_a8/ %G ru %F DE_1975_11_6_a8