1. New Gastroscope With Controllable Flexibility;Taylor;Lancet,1941
2. Gastroscopy;Rodgers;Proc. Royal Soc. Med.,1938
3. Gastroscopy With Transparent Balloon;Colcher;Method for the Visualization of the “Blind Areas”. Am. J. Med.,1947
4. Flexible Gastroscope, With Magnetic Control of Objective;Jennings;Lancet,1939
5. Palpation of the Abdomen as an Aid in Gastroscopic Examination;Moersch;Gastroenterology,1943