%0 Journal Article %A Jerzy Nehring %A Andrzej SkowroĊ„ski %T Polynomial growth trivial extensions of simply connected algebras %J Fundamenta Mathematicae %D 1989 %P 117-134 %V 132 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-132-2-117-134/ %R 10.4064/fm-132-2-117-134 %G en %F 10_4064_fm_132_2_117_134