Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1993_331_5_a8, author = {S. I. Trifonov}, title = {Analytic families of differential equations on two-dimensional}, journal = {Doklady Akademii Nauk}, pages = {559--562}, publisher = {mathdoc}, volume = {331}, number = {5}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_5_a8/} }
S. I. Trifonov. Analytic families of differential equations on two-dimensional. Doklady Akademii Nauk, Tome 331 (1993) no. 5, pp. 559-562. http://geodesic.mathdoc.fr/item/DAN_1993_331_5_a8/