1. Athanasoulis CA, Moncure AC, Greenfield AJ, Ryan JA, Dodson TF: Intraoperative localization of small bowel bleeding sites with combined use of angiographic methods and methylene blue injection.Surgery 87(1): 77–84, 1980
2. Briley CA, Jackson DC, Johnsrude IS, Mills SR: Acute gastrointestinal hemorrhage of small bowel origin.Radiology 136:317–319, 1980
3. Baum S, Nusbaum M, Blakemore WS, Finkelstein AK: The preoperative radiographic demonstration of intraabdominal bleeding from undetermined sites by percutaneous selective celiac and superior mesenteric arteriography.Surgery, 58(5):797–805, 1965
4. Frey CF, Reuter SR, Bookstein JJ: Localization of gastrointestinal hemorrhage by selective angiography.Surgery 67(3): 548–555, 1970
5. Spechler SJ, Schimmel EM: Gastrointstinal tract bleeding of unknown origin.Arch Intern Med 142(2): 236–240, 1982