1. Development of the magnifying small intestinofiberscope and pathophysiological studies on morphological structure of villi.Gastroenterol. endosc., 1978,20, 3, 197.
2. GUTZEIT K., TEITGE H. — Die Gastroscopie. Lehrbuch und Atlas. Urban und Schwarzenberg, München, 1954.
3. IDA K., AKASAKA Y., OKUDA J., IKEZAKI M. — Studies on minute lesions of stomach utilising a magnifying fiberscope (GIF-M).Gastroenterol. endosc., 1975.17, 2, 235.
4. IDO K., YOSHIDA Y., SEKI A., YAMANAKA T., SAKAI H., KIMURA K. — A comparative study between magnifying laparoscopy of the intrahepatic cholestatic liver surface and histology.Gastroenterol. endosc., 1979,21, 7, 827.
5. KIMURA K., IDO K., SEKI S., YAMANAKA T., TSUCHIYA M., SAKAI H. — Close up observation of fine structures of the liver with a new intrument magnifying laparoscope.Gastroenterol. endosc., 1977,19, 4, 394.