1. Heart disease in infancy and childhood;Kieth;New York: Macmillan Publishing,1958
2. Pediatric cardiology;Nadas;Philadelphia: WB Saunders,1972
3. Anatomical variations in 46 patients with congenital aortic stenosis;Spencer;Am Surg,1960
4. Congenital aortic stenosis: experience with 43 patients;Chiariello;J Thorac Cardiovasc Surg,1976
5. Congenital fixed subvalvular aortic stenosis: an anatomical classification and correlations with operative results;Reis;Circulation Circulationirculation (suppl 1),1971