1. An analysis of x-ray findings in 405 cases of benign gastric, pyloric ulcer;Russell;Radiology,1948
2. Ulcers of the pyloric ring;Butsch;Proc. Staff Meet., Mayo Clin.,1935
3. Brethwaite, S., Weintraub, S., Skoog-Smith, W.A.: Pyloric canal ulcer-An analysis of 86 cases. Read by title. 53rd Annual Meeting, American Gastroenterological Association, Atlantic City, May 2, 3, 1952.
4. Ulcers of the pyloric ring: Report of 20 cases;Boylston;Arch. Int. Med.,1949
5. Ulcers of the pyloric canal;Gutman;Arch. d. mal. de l'app. digestif.,1935