Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_121_2_a6, author = {Ya. N. Roitenberg}, title = {On the accumulation of perturbations in non-stationary linear systems}, journal = {Doklady Akademii Nauk}, pages = {221--224}, publisher = {mathdoc}, volume = {121}, number = {2}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_121_2_a6/} }
Ya. N. Roitenberg. On the accumulation of perturbations in non-stationary linear systems. Doklady Akademii Nauk, Tome 121 (1958) no. 2, pp. 221-224. http://geodesic.mathdoc.fr/item/DAN_1958_121_2_a6/