@article{GDZPPN002089319, title = {Rigidity of Quotient Singularities.}, journal = {Inventiones mathematicae}, volume = {14}, year = {1971}, pages = {17-26}, zbl = {0232.14005}, url = {http://dml.mathdoc.fr/item/GDZPPN002089319} }
Schlessinger, Michael. Rigidity of Quotient Singularities.. Inventiones mathematicae, Tome 14 (1971) pp. 17-26. http://gdmltest.u-ga.fr/item/GDZPPN002089319/