Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_139_1_a8, author = {M. Z. Solomyak}, title = {Elliptic operators on two-dimensional manifolds}, journal = {Doklady Akademii Nauk}, pages = {37--39}, publisher = {mathdoc}, volume = {139}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_1_a8/} }
M. Z. Solomyak. Elliptic operators on two-dimensional manifolds. Doklady Akademii Nauk, Tome 139 (1961) no. 1, pp. 37-39. http://geodesic.mathdoc.fr/item/DAN_1961_139_1_a8/