@article{GDZPPN002324377, title = {Infinitesimal Deformations of Cusp Singularities.}, journal = {Mathematische Annalen}, volume = {264}, year = {1983}, pages = {407-422}, zbl = {0559.14001}, url = {http://dml.mathdoc.fr/item/GDZPPN002324377} }
Behnke, Kurt. Infinitesimal Deformations of Cusp Singularities.. Mathematische Annalen, Tome 264 (1983) pp. 407-422. http://gdmltest.u-ga.fr/item/GDZPPN002324377/