1. Ackermann, L. V.: Surgical Pathology. St. Louis C. V. Mosby Comp. 1953.
2. Ahlström, C. G.: Sulcus-superior-Tumörer. Nord. Med. 102, 1129 (1940).
3. Alexander, J., and C. Haight: Pulmonary resection for solitary metastatic sarcomas and carcinomas. Surg. etc. 85, 129 (1947).
4. Allison, P. R.: Intrapericardial approach to the lung root in the treatment of bronchial carcinoma by dissection pneumonectomy. J. Thorac. Surg. 15, 99 (1946).
5. Alwens, W., E. E. Bauee u. W. Jonas: Auffallende Häufung von Bronchialkrebs bei Arbeitern der them. Industrie. Munch. med. Wschr. 1936, 485.