Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1986_291_3_a8, author = {A. L. Skubachevskii}, title = {Solvability of elliptic problems with nonlocal boundary conditions}, journal = {Doklady Akademii Nauk}, pages = {551--555}, publisher = {mathdoc}, volume = {291}, number = {3}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_291_3_a8/} }
A. L. Skubachevskii. Solvability of elliptic problems with nonlocal boundary conditions. Doklady Akademii Nauk, Tome 291 (1986) no. 3, pp. 551-555. http://geodesic.mathdoc.fr/item/DAN_1986_291_3_a8/