1. Topological methods to compute Chern–Simons invariants;Auckly;Math. Proc. Camb. Philos. Soc.,1994
2. Spectral asymmetry and Riemannian geometry. II;Atiyah;Math. Proc. Camb. Philos. Soc.,1975
3. Differential Characters and Geometric Invariants;Cheeger,1985
4. On the G-signature theorem in dimension four;Gordon,1986
5. Algebraic Topology;Hatcher,2002