Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_224_1_a2, author = {A. B. Vasil'eva}, title = {Singularly perturbed systems containing indeterminacy in the case of degeneracy}, journal = {Doklady Akademii Nauk}, pages = {19--22}, publisher = {mathdoc}, volume = {224}, number = {1}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_1_a2/} }
A. B. Vasil'eva. Singularly perturbed systems containing indeterminacy in the case of degeneracy. Doklady Akademii Nauk, Tome 224 (1975) no. 1, pp. 19-22. http://geodesic.mathdoc.fr/item/DAN_1975_224_1_a2/