@article{bwmeta1.element.desklight-1b7b2234-e877-469f-8b6d-afb67e7aaddb,
author = {Humphrey Fong},
title = {On invariant functions for positive operators},
journal = {Colloquium Mathematicae},
volume = {22},
year = {1970},
pages = {75-84},
zbl = {0223.28016},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-1b7b2234-e877-469f-8b6d-afb67e7aaddb}
}
Humphrey Fong. On invariant functions for positive operators. Colloquium Mathematicae, Tome 22 (1970) pp. 75-84. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-1b7b2234-e877-469f-8b6d-afb67e7aaddb/