@article{GDZPPN001184164,
title = {A Divide and Conquer Method for Unitary and Orthogonal Eigenproblems.},
journal = {Numerische Mathematik},
volume = {58},
year = {1990},
pages = {695-718},
zbl = {0708.65039},
url = {http://dml.mathdoc.fr/item/GDZPPN001184164}
}
Gragg, W.B.; Reichel, L. A Divide and Conquer Method for Unitary and Orthogonal Eigenproblems.. Numerische Mathematik, Tome 58 (1990) pp. 695-718. http://gdmltest.u-ga.fr/item/GDZPPN001184164/