Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1967_172_2_a6, author = {A. I. Koshelev}, title = {Degenerating quasi-linear elliptic equations and systems}, journal = {Doklady Akademii Nauk}, pages = {275--278}, publisher = {mathdoc}, volume = {172}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_172_2_a6/} }
A. I. Koshelev. Degenerating quasi-linear elliptic equations and systems. Doklady Akademii Nauk, Tome 172 (1967) no. 2, pp. 275-278. http://geodesic.mathdoc.fr/item/DAN_1967_172_2_a6/