1. The physiologic mechanisms of cardiac and vascular physical signs;Perloff;J Am Coll Cardiol,1983
2. On cardiac murmurs;Flint;Am J Med Sci,1862
3. Auscultation of the Heart and Phonocardiography;Leatham,1975
4. Systolic murmurs;Leatham;Circulation,1958
5. Clinical Auscultation of the Heart;Levine,1959