@article{GDZPPN002303728,
title = {Fixed Point Theorems for Set-Valued Maps in Infinite Dimensional Spaces.},
journal = {Mathematische Annalen},
volume = {189},
year = {1970},
pages = {87-98},
zbl = {0191.14701},
url = {http://dml.mathdoc.fr/item/GDZPPN002303728}
}
HALPERN, B. Fixed Point Theorems for Set-Valued Maps in Infinite Dimensional Spaces.. Mathematische Annalen, Tome 189 (1970) pp. 87-98. http://gdmltest.u-ga.fr/item/GDZPPN002303728/