@article{GDZPPN002066475,
title = {Links of surface singularities and CR space forms.},
journal = {Commentarii mathematici Helvetici},
volume = {62},
year = {1987},
pages = {240-264},
zbl = {0626.32032},
url = {http://dml.mathdoc.fr/item/GDZPPN002066475}
}
Ehlers, F.; Neumann, W.D.; Scherk, J. Links of surface singularities and CR space forms.. Commentarii mathematici Helvetici, Tome 62 (1987) pp. 240-264. http://gdmltest.u-ga.fr/item/GDZPPN002066475/