1. Alberdi, J. M. Z.: Retrograde embolectomy. J. cardiovasc. Surg. 4, 324 (1963).
2. Albright, H. L., and F. C. Leonard: Embolectomy from the abdominal aorta. New Engl. J. Med. 242, 271 (1950).
3. Alessandri, R.: Neue erfolgreiche Tendelenburg’sche Operation. Langenbecks Arch. klin. Chir. 186, 28 (1936).
4. Allison, P. R., M. S. Duinill, and R. Marshall: Pulmonary embolism. Thorax 15, 273 (1960).
5. Askey, J. M.: Systemic Arterial Embolism. New York and London: Grime and Stratton 1957.