1. É. É. Godik and Yu. V. Gulyaev, Radiotekhnika, No. 8, 51 (1991).
2. Yu. A. Kholodov, The Brain in Electromagnetic Fields [in Russian], Nauka, Moscow (1982).
3. Aristotle, Works in Four Volumes, Mysl', Moscow (1976).
4. H. Poincaré, On Science [Russian translation], Nauka, Moscow (1990).
5. H. Harmuth, Application of Information Theory Methods in Physics [Russian translation], Mir, Moscow (1989).