Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1984_275_4_a0, author = {V. P. Arkhipov and A. V. Sobolev}, title = {Oscillation properties of degenerate second-order differential}, journal = {Doklady Akademii Nauk}, pages = {777--779}, publisher = {mathdoc}, volume = {275}, number = {4}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_275_4_a0/} }
V. P. Arkhipov; A. V. Sobolev. Oscillation properties of degenerate second-order differential. Doklady Akademii Nauk, Tome 275 (1984) no. 4, pp. 777-779. http://geodesic.mathdoc.fr/item/DAN_1984_275_4_a0/