Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1985_284_5_a9, author = {I. M. Petrushko}, title = {Boundary values of solutions of second-order elliptic equations}, journal = {Doklady Akademii Nauk}, pages = {1069--1073}, publisher = {mathdoc}, volume = {284}, number = {5}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1985_284_5_a9/} }
I. M. Petrushko. Boundary values of solutions of second-order elliptic equations. Doklady Akademii Nauk, Tome 284 (1985) no. 5, pp. 1069-1073. http://geodesic.mathdoc.fr/item/DAN_1985_284_5_a9/