1. Tuffier, T.: Etat Actuel de la Chirurgie Intrathoracique, Tr. Internat. Cong. Med., 1913, London, 1914, Sect. 7, Surgery, pt. 2, p. 249
2. La Chirurgie du Coeur, Cinquienne Congress de la Societe Internationale de Chirurgie, Paris, July 19-23, 1920, Rapports Proces-Verbaux et Discussions Publies par le Docteur, Brussels, Hayez, 1921, L. Mayer, pp. 5-75.
3. A Text-Book of Pathology;Bell,1938
4. Hufnagel, C. A.: Presented at the Thirty-fifth Clinical Congress, American College of Surgeons, Chicago, Oct. 17-21, 1949. To be published.
5. An Artificial Aortic Valve;Campbell;J. Thoracic Surg.,1950