Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1979_25_3_a9, author = {M. N. Feller}, title = {Solvability of infinite-dimensional elliptic equations with variable coefficients}, journal = {Matemati\v{c}eskie zametki}, pages = {419--424}, publisher = {mathdoc}, volume = {25}, number = {3}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_3_a9/} }
M. N. Feller. Solvability of infinite-dimensional elliptic equations with variable coefficients. Matematičeskie zametki, Tome 25 (1979) no. 3, pp. 419-424. http://geodesic.mathdoc.fr/item/MZM_1979_25_3_a9/