@article{GDZPPN002104881,
title = {Threefolds and deformations of surface singularities.},
journal = {Inventiones mathematicae},
volume = {93},
year = {1988},
pages = {299-338},
zbl = {0642.14008},
url = {http://dml.mathdoc.fr/item/GDZPPN002104881}
}
Shepherd-Barron, N.I.; Kollár, J. Threefolds and deformations of surface singularities.. Inventiones mathematicae, Tome 93 (1988) pp. 299-338. http://gdmltest.u-ga.fr/item/GDZPPN002104881/