@article{bwmeta1.element.bwnjournal-article-fmv137i1p1bwm,
author = {Helga Schirmer},
title = {The least number of fixed points of bimaps},
journal = {Fundamenta Mathematicae},
volume = {138},
year = {1991},
pages = {1-8},
zbl = {0726.55001},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv137i1p1bwm}
}
Schirmer, Helga. The least number of fixed points of bimaps. Fundamenta Mathematicae, Tome 138 (1991) pp. 1-8. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv137i1p1bwm/