@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/