1. Interesting case of early diagnosed gastric cancer;Okada S;Shokakibyogaku,1938
2. The first report regarding how to take photos of gastric mucosa;Uji T;Nihonrinshogekaikaizasshi,1951
3. Diagnoses of gastric diseases by using gastrocamera;Tasaka S;Saishin‐igaku,1954
4. Photo shooting of mucosa by using special lights;Tasaka S;Gastroenterol Endosc,1959