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@article{DE_1993_29_6_a17, author = {I. M. Burkin}, title = {A frequency criterion for the orbital stability of limit cycles of the second kind}, journal = {Differencialʹnye uravneni\^a}, pages = {1061--1063}, publisher = {mathdoc}, volume = {29}, number = {6}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1993_29_6_a17/} }
I. M. Burkin. A frequency criterion for the orbital stability of limit cycles of the second kind. Differencialʹnye uravneniâ, Tome 29 (1993) no. 6, pp. 1061-1063. http://geodesic.mathdoc.fr/item/DE_1993_29_6_a17/