%0 Journal Article %A W. Geller %A M. Pollicott %T An entropy for $ℤ^2$ -actions with finite entropy generators %J Fundamenta Mathematicae %D 1998 %P 209-220 %V 157 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-157-2-3-209-220/ %R 10.4064/fm-157-2-3-209-220 %G en %F 10_4064_fm_157_2_3_209_220