Deformations of Algebras and Cohomology of Fixed Point Sets. Volker Puppe (1979/1980) Manuscripta mathematica
Der Conner-Floyd-Isomorphismus für Abelsche Gruppen. Christian Okonek (1982) Mathematische Zeitschrift
Differentiable Circle Group Actions on Homotopy Complex Projective Spaces. Kai Wang (1975) Mathematische Annalen