1. Primer of gastrointestinal fiberoptic endoscopy;Sugawa,1981
2. Fibre-optic endoscopy;Salmon,1974
3. Instrumentation and techniques;McColl,1976
4. Endoscopy and biopsy of esophagus, stomach, and duodenum;Demling,1982
5. Practical gastrointestinal endoscopy;Cotton,1980