%0 Journal Article %A Müller, Winfried B. %T Formal integration in composition rings %J Mathematica slovaca %D 1983 %P 121-126 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1983__33_1_a17/ %G en %F MASLO_1983__33_1_a17