@article{GDZPPN001166700,
title = {Bounds for the Inequality of Wielandt.},
journal = {Numerische Mathematik},
volume = {10},
year = {1967},
pages = {142-146},
zbl = {0158.03505},
url = {http://dml.mathdoc.fr/item/GDZPPN001166700}
}
Loizou, G. Bounds for the Inequality of Wielandt.. Numerische Mathematik, Tome 10 (1967) pp. 142-146. http://gdmltest.u-ga.fr/item/GDZPPN001166700/