@article{bwmeta1.element.bwnjournal-article-fmv69i1p15bwm,
author = {Harold Bell},
title = {Fixed points, index, and degree for some set valued functions},
journal = {Fundamenta Mathematicae},
volume = {68},
year = {1970},
pages = {213-217},
zbl = {0206.52103},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv69i1p15bwm}
}
Bell, Harold. Fixed points, index, and degree for some set valued functions. Fundamenta Mathematicae, Tome 68 (1970) pp. 213-217. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv69i1p15bwm/