1. Standardization of the Precordial Leads,1938
2. The Heart in Old Age;Willius;Am. J. M. Sc,1931
3. The Electrocardiogram in the Aged;Levitt;Am. Heart J,1939
4. Electrocardiographic Studies in Old Age;Taran;Ann. Int. Med,1944
5. The Electrocardiogram in Apparently Non-Cardiacs Over 65 Years of Age;Warnecke;Ztschr. f. Kreislaufforsch,1931