@article{GDZPPN00233545X, title = {The hypercomplex quotient and the quaternionic quotient.}, journal = {Mathematische Annalen}, volume = {291}, year = {1991}, pages = {323-340}, zbl = {0723.53043}, url = {http://dml.mathdoc.fr/item/GDZPPN00233545X} }
Joyce, Dominic. The hypercomplex quotient and the quaternionic quotient.. Mathematische Annalen, Tome 291 (1991) pp. 323-340. http://gdmltest.u-ga.fr/item/GDZPPN00233545X/