%0 Journal Article %A Frieder Knüppel %T Products of simple isometries of given conjugacy types. %J Forum mathematicum %D 1993 %P 441-458 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1993__5_3_141714/ %F FORUM_1993__5_3_141714