1. L. A. Vodolazskii, Byull. Éksper. Biol. i Med., No. 10 (1959) p. 94.
2. L. A. Vodolazskii, Problems of the Method of Recording Electromyograms and Electrocardiograms of an Operator at Work, Author's Abstract of Candidate's Dissertation [in Russian] (Moscow, 1959).
3. V. G. Davydov, Problems of the Hygiene of Labor and Industrial Diseases [in Russian] (Moscow, 1948) p. 86.
4. S. M. Pachenko and others, in the book: Advanced Experimentation and Scientific Achievements in the Medical Industry, No. 5 (17) [in Russian] (Moscow, 1956) p. 63.
5. V. V. Rozenblat, in the book: Contributions to the 3rd (zonal) Scientific and Practical Conference on Medical Control and Physical Culture Therapy. No. 2 (Svervlovsk., 1959) p. 73.