1. Funktionelle Morphologie;Becker,1979
2. Duodenoscopy and retrograde choledochopancreatography: present position in relation to periampullary and pancreatic cancer;Blumgart;Journal of Surgery and Oncology,1975
3. Anatomy of the choledochoduodenal junction in man;Boyden;Surgery, Gynecology and Obstetrics,1957
4. Periampullary carcinoma;Braasch;Medical Clinics of North America,1975
5. Benign neoplasm of the extrahepatic biliary ducts;Burhans;American Surgeon,1971