1. Expansions of the atrio-ventricular system in the atria;Robb,1960
2. Electrophysiologic evidence for specialized fiber types in the rabbit atrium;Paes de Carvalho;Am. J. Physiol.,1959
3. Wallace, Andrew G.:Personal communication.
4. Hoffman B.F.: Electrical activity of the atrioventricular node, in Symposium on the specialized tissues of the heart1, p. 143.
5. Cellular electrophysiology of the atrial specialized tissues;Paes de Carvalho,1960