Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1980_251_4_a5, author = {V. V. Lychagin}, title = {On the singularities of solutions of differential equations}, journal = {Doklady Akademii Nauk}, pages = {794--799}, publisher = {mathdoc}, volume = {251}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_251_4_a5/} }
V. V. Lychagin. On the singularities of solutions of differential equations. Doklady Akademii Nauk, Tome 251 (1980) no. 4, pp. 794-799. http://geodesic.mathdoc.fr/item/DAN_1980_251_4_a5/