Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1982_18_11_a22, author = {Yu. V. Kostarchuk}, title = {General elliptic boundary value problems with discontinuous coefficients}, journal = {Differencialʹnye uravneni\^a}, pages = {1989--1993}, publisher = {mathdoc}, volume = {18}, number = {11}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_11_a22/} }
Yu. V. Kostarchuk. General elliptic boundary value problems with discontinuous coefficients. Differencialʹnye uravneniâ, Tome 18 (1982) no. 11, pp. 1989-1993. http://geodesic.mathdoc.fr/item/DE_1982_18_11_a22/