Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1983_161_a10, author = {M. O. Otelbaev}, title = {Coercive estimates and separability theorems for elliptic equations in $R^n$}, journal = {Informatics and Automation}, pages = {195--217}, publisher = {mathdoc}, volume = {161}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1983_161_a10/} }
M. O. Otelbaev. Coercive estimates and separability theorems for elliptic equations in $R^n$. Informatics and Automation, Investigations in the theory of differentiable functions of many variables and its applications. Part 9, Tome 161 (1983), pp. 195-217. http://geodesic.mathdoc.fr/item/TRSPY_1983_161_a10/