1. Basmajian, J. V. Muscles alive: Their functions revealed by electromyography. Baltimore: Williams and Wilkins. 1962 P 7
2. Harrison. V. F., & Mortensen. O. A. Anatomical Record. 1960. 136. 207: 1962. 144, 109. (Abstract)
3. Basmajian. J. V., & Stecko, G. Journal of Applied Physiology. 1962. 17, 849
4. Harrison. V. F. Anatomical Record. 1963. 145. 237. (Abstract)