@article{JRAM_1985__360_152740,
     author = {A. Vanderbauwhede},
     title = {Bifurcation of periodic solutions in a rotationally symmetric oscillation system.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--18},
     year = {1985},
     volume = {360},
     zbl = {0555.34036},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1985__360_152740/}
}