1. Intraluminal and juxtamucosal duodenal pH;Birchner, J.; Mann, C.V.; Carlson, H.C.; Code, C.F.; Rovelstad, R.A.;Gastroenterology,1965
2. Nocturnal gastric secretion;Levin, E.; Kirsner, J.B.; Palmer, W.L.; Butler, C.;Arch. Surg,1948
3. The pH of the contents of the duodenal bulb in relation to duodenal ulcer;Rhodes, J.; Apsimon, H.T.; Lawrie, J.H.;Gut,1966
4. Problems associated with assessment of the effects of diet, antacids, and anticholinergic agents on gastric and duodenal acidity, as measured by the glass electrode in situ;Rovelstad, R.A.; Maher, F.T.;Gastroenterology,1962