%0 Journal Article %A K. Fr/aczek %A M. LemaƄczyk %T On symmetric logarithm and some old examples in smooth ergodic theory %J Fundamenta Mathematicae %D 2003 %P 241-255 %V 180 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm180-3-3/ %R 10.4064/fm180-3-3 %G en %F 10_4064_fm180_3_3