1. Abe K, Yamaguchi K, Adachi I, Yanaihara N (1979) Multiple hormone production in islet cell tumors. Excerpta Med 468: 374–379
2. Bani Sacchi T, Bartolini G, Biliotti G, Allara E (1979) Behaviour of the intercalated ducts of the pancreas in patients with functioning insulinomas. J Submicr Cytol 11: 243–248
3. Becker V (1971) Pathologisch-anatomische Aspekte bei endokrin wirksamen Tumoren. Langenbecks Arch Klin Chir 88: 426–437
4. Berger F, Guillaud MM, Frappart L, Patricot LM, Beurlet J, Berger G, Berger F (1979) Immunocytochimie des apudomes pancréatiques et pancréatico-duodénaux. Annls d’Anatomie Path 24: 215–230
5. Blackman NR, Weintraub BD, Rosen SW, Kourides IA, Steinwascher K, Gail MH (1980) Human placental and pituitary glycoprotein hormones and their subunits as tumor markers: A quantitative assessment. J Natl Cancer Inst 65: 81–93