1. Kent RB, Van Heerden JA, Weiland LH: Nonfunctioning islet cell tumors. Ann Surg 193 (2):185?190, 1981
2. Broder LE, Carter SK: Pancreatic islet cell carcinoma. I. Clinical features of 52 patients. Ann Intern Med 79(1):101?107, 1973
3. Eckhauser FE, Cheung PS, Vinik AI, Strodel WE, Lloyd RV, Thompson NW: Nonfunctioning malignant neuroendocrine tumors of the pancreas. Surgery 100(6):978?988, 1986
4. MacLean N, Falconer CWA, Gilmour IEW, Webb JN: Islet cell tumors of the pancreas with portal varices and gastrointestinal hemorrhage. J R Coll Surg, Edinburgh 15:206?212, 1970
5. Broughan TA, Leslie JD, Soto JM, Hermann RE: Pancreatic islet cell tumors. Surgery 99(6):671?678, 1986