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@article{DAN_1965_164_5_a0, author = {S. Kh. Aranson}, title = {Systems on a torus with structural instability of the first degree}, journal = {Doklady Akademii Nauk}, pages = {959--962}, publisher = {mathdoc}, volume = {164}, number = {5}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_164_5_a0/} }
S. Kh. Aranson. Systems on a torus with structural instability of the first degree. Doklady Akademii Nauk, Tome 164 (1965) no. 5, pp. 959-962. http://geodesic.mathdoc.fr/item/DAN_1965_164_5_a0/