1. Friedmann, J.C., Hamburger, W.W.: Experimental chronic gastric ulcer. J.A.M.A.63:380, 1914
2. Huber, F., Huntington, C.G.: Gastric retention and gastric ulcer. Am. J. Roentgen.60:80, 1948
3. Matthews, W. B., Dragstedt, L.R.: The etiology of gastric and duodenal ulcer. Surg. Gynecol. Obstet.55:266, 1932
4. Dragstedt, L.R.: Is gastric ulcer due to hyperfunction or dysfunction of gastric antrum? Editorial. Surg. Gynecol. Obstet.97:517, 1953
5. Dragstedt, L.R.: Gastrin and peptic ulcer. Arch. Surg.91:1005, 1965