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@article{DE_2005_41_1_a5, author = {A. A. Grin' and L. A. Cherkas}, title = {Extrema of the {Andronov--Hopf} function of a polynomial {Lienard} system}, journal = {Differencialʹnye uravneni\^a}, pages = {50--60}, publisher = {mathdoc}, volume = {41}, number = {1}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2005_41_1_a5/} }
A. A. Grin'; L. A. Cherkas. Extrema of the Andronov--Hopf function of a polynomial Lienard system. Differencialʹnye uravneniâ, Tome 41 (2005) no. 1, pp. 50-60. http://geodesic.mathdoc.fr/item/DE_2005_41_1_a5/