1. The Recognition and Significance of Marked and Chronic Systolic Pulsation of the Deep Jugular Veins;White;Tr. A. Am. Physicians,1939
2. Die Herztonkapsel;Frank;Ztschr. f. Biol.,1908
3. An Electric Polygraph;Waud;J. A. M. A.,1924
4. A Sphygmograph Using a Carbon Grain Microphone and the String Galvanometer;Turner;Bull. Johns Hopkins Hosp.,1928
5. Das Elektrokardiogram;Groedel,1934