@article{01894883,
title = {Hopf mappings for complex quaternions.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {44},
year = {2003},
pages = {245-262},
zbl = {1028.22014},
language = {en},
url = {http://dml.mathdoc.fr/item/01894883}
}
Wallner, Johannes. Hopf mappings for complex quaternions.. Beiträge zur Algebra und Geometrie, Tome 44 (2003) pp. 245-262. http://gdmltest.u-ga.fr/item/01894883/