1. I.G. Avramidi, Bogolyubov invariant via relative spectral invariants on manifolds, arXiv:1909.09680 [math-ph].
2. A covariant technique for the calculation of the one-loop effective action;Avramidi;Nuclear Phys.,1991
3. Heat Kernel and Quantum Gravity;Avramidi,2000
4. Gauged gravity via spectral asymptotics of non-Laplace type operators;Avramidi;J. High Energy Phys.,2004
5. Mathemathical tools for calculation of the effective action in quantum gravity;Avramidi,2010