%0 Journal Article %A Kai Wang %T Differentiable Circle Group Actions on Homotopy Complex Projective Spaces. %J Mathematische Annalen %D 1975 %P 73-80 %V 214 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1975__214_162682/ %F MAN_1975__214_162682