@article{GDZPPN002429470,
title = {Unfolding Bifucations of an Elliptic Boundary Value Problem.},
journal = {Mathematische Zeitschrift},
volume = {185},
year = {1984},
pages = {145-150},
zbl = {0526.35011},
url = {http://dml.mathdoc.fr/item/GDZPPN002429470}
}
Peitgen, H-O.; Tromba, A.J. Unfolding Bifucations of an Elliptic Boundary Value Problem.. Mathematische Zeitschrift, Tome 185 (1984) pp. 145-150. http://gdmltest.u-ga.fr/item/GDZPPN002429470/