1. Annals of Mathematics Studies, No. 46;Borel, Armand,1960
2. On knots whose points are fixed under a periodic transformation of the 3-sphere;Fox, R. H.;Osaka Math. J.,1958
3. 3. C. H. Giffen, Periodic sphere transformations with knotted fixed point sets, Notices Amer. Math. Soc. 11 (1964), 341.
4. 4. W.-Y. Hsiang, On the classification of SO(n) actions on simply connected π-mani-folds of dimension less than 2n — l (to appear).
5. Symmetric homology spheres;Mazur, Barry;Illinois J. Math.,1962