Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1967_172_6_a11, author = {M. I. Freidlin}, title = {Elliptic equations in unbounded regions}, journal = {Doklady Akademii Nauk}, pages = {1286--1289}, publisher = {mathdoc}, volume = {172}, number = {6}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_172_6_a11/} }
M. I. Freidlin. Elliptic equations in unbounded regions. Doklady Akademii Nauk, Tome 172 (1967) no. 6, pp. 1286-1289. http://geodesic.mathdoc.fr/item/DAN_1967_172_6_a11/