1. Astrophysics, Quanta, and Relativity Theory [Russian translation], Mir, Moscow (1982).
2. P. Astone et al., Il Nuovo Cimento, 20C, No. 1, 9 (1994).
3. P. A. Bakut et al., Signal Observation Theory [in Russian], Radio i Svyaz’, Moscow (1984).
4. A. V. Gusev and M. P. Vinogradov, Izmer. Tekh., No. 8, 3 (2002).
5. B. R. Levin, Theoretical Principles of Statistical Radio Engineering [in Russian], Radio i Svyaz’, Moscow (1994).