Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1981_17_2_a2, author = {S. A. Mazanik}, title = {Asymptotically equivalent two-dimensional linear differential systems}, journal = {Differencialʹnye uravneni\^a}, pages = {220--226}, publisher = {mathdoc}, volume = {17}, number = {2}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_2_a2/} }
S. A. Mazanik. Asymptotically equivalent two-dimensional linear differential systems. Differencialʹnye uravneniâ, Tome 17 (1981) no. 2, pp. 220-226. http://geodesic.mathdoc.fr/item/DE_1981_17_2_a2/