@article{GDZPPN002337207, title = {The duality of cusp singularities.}, journal = {Mathematische Annalen}, volume = {293}, year = {1992}, pages = {81-98}, zbl = {0759.14003}, url = {http://dml.mathdoc.fr/item/GDZPPN002337207} }
Ishida, Masa-Nori. The duality of cusp singularities.. Mathematische Annalen, Tome 293 (1992) pp. 81-98. http://gdmltest.u-ga.fr/item/GDZPPN002337207/