@article{105984,
author = {Pavel Dr\'abek},
title = {Remarks on multiple periodic solutions of nonlinear ordinary differential equations},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {021},
year = {1980},
pages = {155-160},
zbl = {0425.34042},
mrnumber = {566247},
language = {en},
url = {http://dml.mathdoc.fr/item/105984}
}
Drábek, Pavel. Remarks on multiple periodic solutions of nonlinear ordinary differential equations. Commentationes Mathematicae Universitatis Carolinae, Tome 021 (1980) pp. 155-160. http://gdmltest.u-ga.fr/item/105984/
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Function spaces, Academia, Prague, 1977. (1977) | MR 0482102