1. F.R. Arutyunyan, V.A. Tumanyan, ITEP Preprint ITEF-137, 1962 (unpublished);
2. Phys. Lett. 4 (1963) 176; JETP 44 (1963) 2100 (Sov. Phys. JETP 17 (1963) 1412); R.H. Milburn, Phys. Rev. Lett. 10 (1963) 75; F.R. Arutyunyan, I.I. Goldman, V.A Tumanyan, JETP 45 (1963) 312 (Sov. Phys. JETP 18 (1964) 218).
3. The TUNL-FELL inverse Compton γ-ray source as a nuclear physics facility
4. A. Einstein, Collected Scientific Works, vol. 4, Nauka, Moscow, 1967, p. 114 (in Russian).