%0 Journal Article %A Ruth Kellerhals %T On the volumes of hyperbolic 5-orthoschemes and the Trilogarithm. %J Commentarii mathematici Helvetici %D 1992 %P 648-663 %V 67 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140289/ %F CMH_1992__67_3_140289