@article{GDZPPN001180126,
title = {How to Get around a Simple Quadratic Fold.},
journal = {Numerische Mathematik},
volume = {50},
year = {1986},
pages = {417-428},
zbl = {0623.65059},
url = {http://dml.mathdoc.fr/item/GDZPPN001180126}
}
Brezzi, F.; Cornalba, M.; Di Carlo, A. How to Get around a Simple Quadratic Fold.. Numerische Mathematik, Tome 50 (1986) pp. 417-428. http://gdmltest.u-ga.fr/item/GDZPPN001180126/