1. Endoscopy, as Related to Diseases of the Bronchus, Esophagus, Stomach and Peritoneal Cavity;Benedict,1951
2. Esophagoscopy by means of flexible instrument; new esophagogastroscope;Boros;Gastroenterology,1947
3. Safe diagnostic optical esophagoscope;Schindler;J.A.M.A.,1948
4. Adventures in the esophagus;Howard;South. M. J.,1947