%0 Journal Article %A M. LemaƄczyk %T Cohomology groups, multipliers and factors in ergodic theory %J Studia Mathematica %D 1997 %P 275-288 %V 122 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-122-3-275-288/ %R 10.4064/sm-122-3-275-288 %G en %F 10_4064_sm_122_3_275_288