@article{GDZPPN002314142, title = {Normal Surface Singularities with C* Action.}, journal = {Mathematische Annalen}, volume = {229}, year = {1977}, pages = {183-194}, zbl = {0338.14010}, url = {http://dml.mathdoc.fr/item/GDZPPN002314142} }
Pinkham, H. Normal Surface Singularities with C* Action.. Mathematische Annalen, Tome 229 (1977) pp. 183-194. http://gdmltest.u-ga.fr/item/GDZPPN002314142/