@article{GDZPPN00233514X,
title = {The Perron-Frobenius theorem in relative spectral theory.},
journal = {Mathematische Annalen},
volume = {291},
year = {1991},
pages = {451-464},
zbl = {0712.47032},
url = {http://dml.mathdoc.fr/item/GDZPPN00233514X}
}
Bidard, C.; Zerner, M. The Perron-Frobenius theorem in relative spectral theory.. Mathematische Annalen, Tome 291 (1991) pp. 451-464. http://gdmltest.u-ga.fr/item/GDZPPN00233514X/