@article{GDZPPN001185276,
title = {Smooth factorizations of matrix valued functions and their derivatives.},
journal = {Numerische Mathematik},
volume = {59},
year = {1991},
pages = {115-132},
zbl = {0753.65033},
url = {http://dml.mathdoc.fr/item/GDZPPN001185276}
}
Mehrmann, Volker; Kunke, Peter. Smooth factorizations of matrix valued functions and their derivatives.. Numerische Mathematik, Tome 59 (1991) pp. 115-132. http://gdmltest.u-ga.fr/item/GDZPPN001185276/