Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1968_179_1_a3, author = {V. M. Millionshchikov}, title = {A metric theory of linear systems of differential equations}, journal = {Doklady Akademii Nauk}, pages = {20--23}, publisher = {mathdoc}, volume = {179}, number = {1}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_179_1_a3/} }
V. M. Millionshchikov. A metric theory of linear systems of differential equations. Doklady Akademii Nauk, Tome 179 (1968) no. 1, pp. 20-23. http://geodesic.mathdoc.fr/item/DAN_1968_179_1_a3/