%0 Journal Article %A Eduardo Jorquera %T On the entropy for group actions on the circle %J Fundamenta Mathematicae %D 2009 %P 177-187 %V 204 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm204-2-6/ %R 10.4064/fm204-2-6 %G en %F 10_4064_fm204_2_6