1. Demonstration of a new gastroscope, the “Fiberscope;Hirschowitz;Gastroenterology,1958
2. Endoscopic examination of the stomach and duodenal cap with the fiberscope;Hirschowitz;Lancet,1961
3. In memoriam. Dr. Rudolf Schindler;Dagradi;Gastroint. Endoscopy,1968
4. Progress of gastrocamera examination;Tasaka;Proc. First Congr. Int. Soc. Endoscopy, Tokyo,1966
5. Gastrocamera type 5A;Ashizawa;Z. Gastroent.,1967