@article{GDZPPN002211165,
title = {Bifurcation from the spectrum towards regular values.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {435},
year = {1993},
pages = {1-30},
zbl = {0795.47041},
url = {http://dml.mathdoc.fr/item/GDZPPN002211165}
}
Buffoni, B.; Jeanjean, L. Bifurcation from the spectrum towards regular values.. Journal für die reine und angewandte Mathematik, Tome 435 (1993) pp. 1-30. http://gdmltest.u-ga.fr/item/GDZPPN002211165/