@article{GDZPPN002202581,
title = {Bifurcation of periodic solutions in a rotationally symmetric oscillation system.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {358},
year = {1985},
pages = {1-18},
zbl = {0555.34036},
url = {http://dml.mathdoc.fr/item/GDZPPN002202581}
}
Vanderbauwhede, A. Bifurcation of periodic solutions in a rotationally symmetric oscillation system.. Journal für die reine und angewandte Mathematik, Tome 358 (1985) pp. 1-18. http://gdmltest.u-ga.fr/item/GDZPPN002202581/