This paper discusses the asymptotic behavior of solutions of the Liénard equation, especially the global behavior of unbounded solutions, and also gives a class of sufficient and necessary conditions for the orbit of a solution to intersect the vertical isocline.
@article{bwmeta1.element.bwnjournal-article-apmv64z2p115bwm,
author = {Changming Ding},
title = {Unbounded solutions of positively damped Li\'enard equations},
journal = {Annales Polonici Mathematici},
volume = {63},
year = {1996},
pages = {115-120},
zbl = {0864.34026},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv64z2p115bwm}
}
Changming Ding. Unbounded solutions of positively damped Liénard equations. Annales Polonici Mathematici, Tome 63 (1996) pp. 115-120. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv64z2p115bwm/
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