1. Personal communication;Eusterman,1957
2. The Stomach and Duodenum;Eusterman,1936
3. Ulcers Of The Pyloric Ring;Butsch;Proc. Staff Meet. Mayo Clin.,1935
4. Eusterman, G.B., Discussion of Butsch.3
5. Pyloric Channel Ulcer;Texter;Gastroenterology,1953