Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1971_196_2_a13, author = {P. E. Sobolevskii}, title = {Degenerate parabolic operators}, journal = {Doklady Akademii Nauk}, pages = {302--304}, publisher = {mathdoc}, volume = {196}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_2_a13/} }
P. E. Sobolevskii. Degenerate parabolic operators. Doklady Akademii Nauk, Tome 196 (1971) no. 2, pp. 302-304. http://geodesic.mathdoc.fr/item/DAN_1971_196_2_a13/