REFERENCES
- Nadas, A. S.: Pediatric Cardiology. Philadelphia, W. B. Saunders Company, 1957, p. 102.
- Levine, S. A.: Clinical Heart Disease. Ed. 4. Philadelphia, W. B. Saunders Company, 1951. p. 202.
- Roche, E. H.: Clinical evaluation of systolic murmurs. New Zealand M. J. 54:674 (December) 1955.
- Richards, M. R., Merritt, K. K., Samuel, M. H. and Langmann, A. G.: Frequency and significance of cardiac murmurs in the first year of life. Pediatrics 15:169 (February) 1955.
- Gibson, S.: Clinical significance of heart murmurs in children. M. Clin. North America 30:35 (January) 1946.
- Masseloff, C. R.: Functional systolic murmurs in children. Am. J. M. Sc. 217:71 (January) 1949.
- Harris, T. N.: Phonocardiography study of pulmonic-systolic murmurs in children. Am. Heart J. 50:805 (December) 1955.
- Harris, T. N., Friedman, S. and Haub, C. F.: Phonocardiographic differentiation of the murmur of mitral insufficiency from some commonly heard adventitious sounds in childhood. Pediatrics 3:845 (June) 1949.
- Friedberg, C. K.: Diseases of the Heart. Ed. 2. Philadelphia, W. B. Saunders Company, 1956, p. 647.
- Groom, D., Boone, J. A. and Jenkins, M.: Venous hum in cardiac auscultation. J.A.M.A. 159:639 (October 15) 1955.