Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1997_352_4_a6, author = {O. M. Penkin}, title = {On the maximum principle for an elliptic equation on a}, journal = {Doklady Akademii Nauk}, pages = {462--465}, publisher = {mathdoc}, volume = {352}, number = {4}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1997_352_4_a6/} }
O. M. Penkin. On the maximum principle for an elliptic equation on a. Doklady Akademii Nauk, Tome 352 (1997) no. 4, pp. 462-465. http://geodesic.mathdoc.fr/item/DAN_1997_352_4_a6/