Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_221_5_a10, author = {M. N. Feller}, title = {On the solvability of infinite-dimensional selfadjoint elliptic equations}, journal = {Doklady Akademii Nauk}, pages = {1046--1049}, publisher = {mathdoc}, volume = {221}, number = {5}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a10/} }
M. N. Feller. On the solvability of infinite-dimensional selfadjoint elliptic equations. Doklady Akademii Nauk, Tome 221 (1975) no. 5, pp. 1046-1049. http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a10/