1. Barwick, D. D. (1963). In Research in Muscular Dystrophy; Proc. 2nd Symposium, Muscular Dystrophy Group, pp. 10-19. Pitman Medical Publ. Co., London.
2. The relation between the number of impulses and the integrated electric activity in electromyogram;Bergstrom, R.M.;Acta physiol. scand,1959
3. Volume conduction of the spike of the motor unit potential investigated with a new type of multielectrode;Buchthal, F.; Guld, C.; Rosenfalck, P.;Ibid,1957
4. Buchthal, F., Guld, C., and Rosenfalck, P., and Rosenfalck, P. (1963). In Muscular Dystrophy in Man and Animals, edited by G. H. Bourne and M. N., Golarz, p. 197. Karger, Basel.
5. Motor-unit action-potential counts. Their significance in isometric and isotonic contractions;Close, J.R.; Nickel, E.D.; Todd, F.N.;J. Bone Jt Surg,1960