%0 Journal Article %A Denise de Mattos %A Thaís F. M. Monis %A Edivaldo L. dos Santos %T Relative Borsuk–Ulam Theorems for Spaces with a Free $\mathbb{Z}_2$-action %J Bulletin of the Polish Academy of Sciences. Mathematics %D 2013 %P 71-77 %V 61 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ba61-1-8/ %R 10.4064/ba61-1-8 %G en %F 10_4064_ba61_1_8