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@article{DE_1981_17_10_a6, author = {V. F. Butuzov and A. G. Nikitin}, title = {On a system of singularly perturbed equations of elliptic type}, journal = {Differencialʹnye uravneni\^a}, pages = {1779--1791}, publisher = {mathdoc}, volume = {17}, number = {10}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_10_a6/} }
V. F. Butuzov; A. G. Nikitin. On a system of singularly perturbed equations of elliptic type. Differencialʹnye uravneniâ, Tome 17 (1981) no. 10, pp. 1779-1791. http://geodesic.mathdoc.fr/item/DE_1981_17_10_a6/