Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1994_335_3_a9, author = {B. T. Polyak and Ya. Z. Tsypkin}, title = {Robust aperiodicity}, journal = {Doklady Akademii Nauk}, pages = {304--307}, publisher = {mathdoc}, volume = {335}, number = {3}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1994_335_3_a9/} }
B. T. Polyak; Ya. Z. Tsypkin. Robust aperiodicity. Doklady Akademii Nauk, Tome 335 (1994) no. 3, pp. 304-307. http://geodesic.mathdoc.fr/item/DAN_1994_335_3_a9/