”Gastric intrinsic factor: the gastric and small intestinal stages of cobalamin absorption. A personal journey”. Biochimie 95 (5): sid. 989–94. May 2013. doi:10.1016/j.biochi.2012.12.006. PMID 23274574.
”The independent secretion of acid, pepsin, and intrinsic factor by the human stomach”. Gastroenterology 34 (2): sid. 196–209. 1958. doi:10.1016/S0016-5085(58)80102-X. PMID 13512593.
”Gastric intrinsic factor: the gastric and small intestinal stages of cobalamin absorption. A personal journey”. Biochimie 95 (5): sid. 989–94. May 2013. doi:10.1016/j.biochi.2012.12.006. PMID 23274574.
”The independent secretion of acid, pepsin, and intrinsic factor by the human stomach”. Gastroenterology 34 (2): sid. 196–209. 1958. doi:10.1016/S0016-5085(58)80102-X. PMID 13512593.