@article{GDZPPN002321610,
title = {Derivations of Negative Weight and Non-Smoothability of Certain Singularities.},
journal = {Mathematische Annalen},
volume = {255},
year = {1981},
pages = {383-398},
zbl = {0507.14029},
url = {http://dml.mathdoc.fr/item/GDZPPN002321610}
}
Wahl, Jonathan M. Derivations of Negative Weight and Non-Smoothability of Certain Singularities.. Mathematische Annalen, Tome 255 (1981) pp. 383-398. http://gdmltest.u-ga.fr/item/GDZPPN002321610/