%0 Journal Article %A Bartosz Frej %A Agata Kwaƛnicka %T A map maintaining the orbits of a given $\mathbb {Z}^d$-action %J Colloquium Mathematicum %D 2016 %P 1-15 %V 143 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm6361-12-2015/ %R 10.4064/cm6361-12-2015 %G en %F 10_4064_cm6361_12_2015