1. Eine neue Methode der Registrierung des Spitzenstosses und Herztons;Koizumi;Jap. J. Clin. Angiocardiology,1938
2. Studies on the Heart Sounds. I. A New Method for the Recording of Heart Sounds and Murmurs;Hinohara;Jap. J. Clin. Angiocardiology,1940
3. Heart Sounds Obtained From Heart Cavity (Japanese language);Tomomatsu;Jap. J. Clin. Angiocardiology,1949
4. On the Condenser Microphone (Japanese language);Tomomatsu;Jap. J. Clin. Angiocardiology,1950
5. Clinical Studies on Heart Failure (Japanese language);Tomomatsu;Jap. J. Clin. Angiocardiology,1951