Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1978_243_2_a0, author = {U. Raitums}, title = {The extension of extremal problems connected with a linear elliptic equation}, journal = {Doklady Akademii Nauk}, pages = {281--283}, publisher = {mathdoc}, volume = {243}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_2_a0/} }
U. Raitums. The extension of extremal problems connected with a linear elliptic equation. Doklady Akademii Nauk, Tome 243 (1978) no. 2, pp. 281-283. http://geodesic.mathdoc.fr/item/DAN_1978_243_2_a0/