@article{GDZPPN002445271,
title = {Central extensions of three dimensional Artin-Schelter regular algebras.},
journal = {Mathematische Zeitschrift},
volume = {221},
year = {1996},
pages = {171-212},
zbl = {0876.17019},
url = {http://dml.mathdoc.fr/item/GDZPPN002445271}
}
Le Bruyn, Lieven; Van den Bergh, M. Central extensions of three dimensional Artin-Schelter regular algebras.. Mathematische Zeitschrift, Tome 221 (1996) pp. 171-212. http://gdmltest.u-ga.fr/item/GDZPPN002445271/