1. Blalock A (1948) Surgical procedures employed and anatomical variations encountered in the treatment of congenital pulmonic stenosis. Surg 87: 385
2. Blalock A, Hanlon CR (1948) Interatrial septal defect. Its experimental production under direct vision without interruption of the circulation. Surg 87: 183
3. Borst HG, Klinner W, Senning A (1978) Allgemeine und spezielle Operationslehre. Herz und herznahe Gefäße. Springer, Berlin Heidelberg New York
4. Brock RC (1948) Pulmonary valvotomy for the relief of congenital pulmonary stenosis. Report of three cases. Br Med J 1121
5. Derra E, Bircks W (1976) Handbuch der Thoraxchirurgie. Ergänzungswerk Herzchirurgie I I. Springer, Berlin Heidelberg New York