1. K. P. Staniukovich, Gravitational Field and Elementary Particles (Nauka, Moscow, 1965) [in Russian].
2. K. P. Staniukovich and V. N. Melnikov, Gydrodynamics, Fields and Constants in Gravitational Theory (Energoatomizdat, Moscow, 1983) [in Russian].
3. A. A. Grib, S. G. Mamayev, and V. M. Mostepanenko, Quantum Effects in Intensive External Fields (Atomizdat,Moscow, 1980) [in Russian]; Vacuum Quantum Effects in Strong Fields (Friedmann Laboratory Publishing, St. Petersburg, 1994) [in Russian].
4. M. Khlopov, Fundamentals of Cosmic Particle Physics (CISP-Springer, Cambridge, 2012).
5. N. D. Birrell and P. C. W. Davies, Quantum Fields in Curved Space (Cambridge University Press, Cambridge, 1982).