Veryaskin A.V., Rubakov V.A., Sazhin M.V. The relic gravitational waves in the inflationary universe model and the grand unification scale. Astron. Zhurnal, v.60, p.26, (1983)

Grishchuk L.P., Sazhin M.V. Squeezed quantum states of a harmonic oscillator in the problem of gravitational waves       detection.  Sov. Phys. JETP, v. 57, p.1128 ( 1983)

Sazhin M.V., Surdin V.G., Astronomical devices created by Nature. The Earth and the Universe. N5, p.22, ( 1983 ) (russian )