2) G. Fontaine, G. Guiraudon, R. Frank, R. Coutte & C. Dragodanne : The conduction system of the heart, In Stenfert Kroese, ed. by Wellens et al., 545/563 (1976)
3) M. S. Spach, R. C. Barr, C. F. Lanning & P. C. Tucek : Origin of body surface QRS and T wave potentials from epicardial potential distributions in the intact chimpanzee, Circulation, 55,268 (1977)