@article{02206355,
title = {Fast Givens transformation for quaternion valued matrices applied to Hessenberg reductions.},
journal = {ETNA. Electronic Transactions on Numerical Analysis [electronic only]},
volume = {20},
year = {2005},
pages = {1-26},
zbl = {1078.65033},
language = {en},
url = {http://dml.mathdoc.fr/item/02206355}
}
Janovská, Drahoslava; Opfer, Gerhard. Fast Givens transformation for quaternion valued matrices applied to Hessenberg reductions.. ETNA. Electronic Transactions on Numerical Analysis [electronic only], Tome 20 (2005) pp. 1-26. http://gdmltest.u-ga.fr/item/02206355/