@article{GDZPPN00117763X,
title = {Computing the CS Decomposition of a Partitioned Orthonormal Matrix},
journal = {Numerische Mathematik},
volume = {39},
year = {1982},
pages = {297-306},
zbl = {0516.65016},
url = {http://dml.mathdoc.fr/item/GDZPPN00117763X}
}
Stewart, G.W. Computing the CS Decomposition of a Partitioned Orthonormal Matrix. Numerische Mathematik, Tome 39 (1982) pp. 297-306. http://gdmltest.u-ga.fr/item/GDZPPN00117763X/