%0 Journal Article %A Wu-Yi Hsiang %T Structural Theorems for Topological Actions of Z...-Tori on Real, Complex and Quarternionic Projective Spaces %J Commentarii mathematici Helvetici %D 1974 %P 479-491 %V 49 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1974__49_139595/ %F CMH_1974__49_139595