1. Tumors of the bile ducts;Marshall;Surg Gynecol Obstet,1932
2. A papillary cystadenoma of the common hepatic duct;Rogers;Can Med Assoc J,1946
3. Benign neoplasms of the extrahepatic biliary ducts;Chu;Arch Pathol,1950
4. Papillomes et papillomatoses de la voie biliaire principale;Caroli;Rev Medicochir Mal Foie,1959
5. Eline papillomatose der intra- und extrahepatisechen Gallenwege;Borner;Z Krebsforsch,1960