@article{GDZPPN002308568, title = {Taut Two-Dimensional Singularities.}, journal = {Mathematische Annalen}, volume = {201}, year = {1973}, pages = {131-164}, zbl = {0281.32010}, url = {http://dml.mathdoc.fr/item/GDZPPN002308568} }
Laufer, Henry B. Taut Two-Dimensional Singularities.. Mathematische Annalen, Tome 201 (1973) pp. 131-164. http://gdmltest.u-ga.fr/item/GDZPPN002308568/