%0 Journal Article %A Mariusz Lemańczyk %A Mieczysław K. Mentzen %A Hitoshi Nakada %T Semisimple extensions of irrational rotations %J Studia Mathematica %D 2003 %P 31-57 %V 156 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm156-1-3/ %R 10.4064/sm156-1-3 %G en %F 10_4064_sm156_1_3