1. Nomenclature and Criteria for Diagnosis of Diseases of the Heart and Blood Vessels;Schwedel,1953
2. Diagnostic procedures, radiologic examination of the thorax;Hinshaw,1956
3. Funnel chest and allied deformities of the thoracic cage;Lester;J. Thoracic Surg.,1950
4. Clues in the Diagnosis and Treatment of Heart Disease;White,1956