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Rubin, M.; Shimonov, M.; Grief, F.; Rotestein, Z.; Lelcuk, S. (1998). "Phytobezoar: A rare cause of intestinal obstruction". Digestive Surgery. 15 (1): 52–54. doi:10.1159/000018586. PMID9845563.
Downard, Cynthia D.; Pena-Peterson, Snow; Jaksic, Tom (2004-01-01), "Foreign Bodies", in Johnson, Leonard R. (ed.), Encyclopedia of Gastroenterology, New York: Elsevier, pp. 66–69, ISBN978-0-12-386860-2, retrieved 2023-08-25. "Operative intervention with a possible gastrotomy or enterotomy is often required to relieve the intestinal obstruction."