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@article{DE_2006_42_12_a12, author = {I. L. Zinchenko}, title = {The asymptotic phase of a limit cycle}, journal = {Differencialʹnye uravneni\^a}, pages = {1712--1713}, publisher = {mathdoc}, volume = {42}, number = {12}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2006_42_12_a12/} }
I. L. Zinchenko. The asymptotic phase of a limit cycle. Differencialʹnye uravneniâ, Tome 42 (2006) no. 12, pp. 1712-1713. http://geodesic.mathdoc.fr/item/DE_2006_42_12_a12/