1. Free 𝑍_{𝑝}-actions on homotopy spheres;Browder, William,1970
2. Free 𝑍₂ and 𝑍₃ actions on homotopy spheres;Livesay, G. R.;Topology,1968
3. Involutions on homotopy spheres;Livesay, G. R.,1968
4. Whitehead torsion;Milnor, J.;Bull. Amer. Math. Soc.,1966
5. The Atiyah-Singer invariant, the Wall groups 𝐿_{𝑛}(𝜋,1), and the function (𝑡𝑒^{𝑥}+1)/(𝑡𝑒^{𝑥}-1);Petrie, Ted;Ann. of Math. (2),1970