1. Bacon, H. E.: Cancer of the colon, rectum and anal canal. Philadelphia: J. B. Lippincott Comp. 1964
2. Bagshaw, K. D.: Immunological features of choriocarcinoma. Brit. med. J. 1970 IV, 426?427
3. Black, M. M.: Reactivity of the lymphoreticuloendothelial system in human cancer. In: Progress in clinical cancer, vol. I, ed. I. M. Ariel. New York: Grune & Stratton 1965
4. Black, M. M., Opler, S. R., Speer, F. D.: Microscopic structure of gastric carcinomas and their regional lymphnodes in relation to survival. Surg. Gyneo. Obstet. 98, 725?734 (1954)
5. Bokelmann, D., Drüner, H. U., Schulz, U.: Klinik und Prognose der Kolon-Rektum-Karzinome. Dtsch. med. Wschr. 97, 1590?1594 (1972)