Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1992_51_2_a21, author = {Yu. A. Konyaev}, title = {Classes of regular and singular boundary problems}, journal = {Matemati\v{c}eskie zametki}, pages = {149--151}, publisher = {mathdoc}, volume = {51}, number = {2}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1992_51_2_a21/} }
Yu. A. Konyaev. Classes of regular and singular boundary problems. Matematičeskie zametki, Tome 51 (1992) no. 2, pp. 149-151. http://geodesic.mathdoc.fr/item/MZM_1992_51_2_a21/