@article{01171008,
title = {Branching of periodic orbits from Kukles isochrones.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {1998},
year = {1998},
zbl = {0899.34027},
language = {en},
url = {http://dml.mathdoc.fr/item/01171008}
}
Toni, B. Branching of periodic orbits from Kukles isochrones.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 1998 (1998) . http://gdmltest.u-ga.fr/item/01171008/