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@article{MAN_1983__265_163830, author = {Kurt Behnke}, title = {Infinitesimal {Deformations} of {Cusp} {Singularities.}}, journal = {Mathematische Annalen}, pages = {407--422}, publisher = {mathdoc}, volume = {265}, year = {1983}, zbl = {0559.14001}, url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163830/} }
Kurt Behnke. Infinitesimal Deformations of Cusp Singularities.. Mathematische Annalen, Tome 265 (1983), pp. 407-422. http://geodesic.mathdoc.fr/item/MAN_1983__265_163830/