%0 Journal Article %A B. KamiƄski %T An axiomatic definition of the entropy of a $Z^{d}$-action on a Lebesgue space %J Studia Mathematica %D 1990 %P 135-144 %V 96 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-96-2-135-144/ %R 10.4064/sm-96-2-135-144 %G en %F 10_4064_sm_96_2_135_144