Electronic Journal of Qualitative Theory of Differential Equations [electronic only], Tome 2009 (2009),
/ Harvested from The Electronic Library of Mathematics
@article{05703115,
title = {Periodic solutions of },
journal = {Electronic Journal of Qualitative Theory of Differential Equations [electronic only]},
volume = {2009},
year = {2009},
zbl = {1201.35110},
language = {en},
url = {http://dml.mathdoc.fr/item/05703115}
}
El Ouardi, Hamid. Periodic solutions of . Electronic Journal of Qualitative Theory of Differential Equations [electronic only], Tome 2009 (2009) . http://gdmltest.u-ga.fr/item/05703115/