@article{GDZPPN002445751, title = {Properties of -p . p for Gorenstein surface singularities.}, journal = {Mathematische Zeitschrift}, volume = {221}, year = {1996}, pages = {411-420}, zbl = {0901.14006}, url = {http://dml.mathdoc.fr/item/GDZPPN002445751} }
Ganter, Frieda M. Properties of -p . p for Gorenstein surface singularities.. Mathematische Zeitschrift, Tome 221 (1996) pp. 411-420. http://gdmltest.u-ga.fr/item/GDZPPN002445751/