1. Akasaka Y, Kawai K, et al: Study on electromyogram of human gastrointestinal tract -Induced under endoscopical direct visual control-(Jpn). J Kyoto Pref Univ Med 83: 721–724, 1974
2. Akasaka Y, Kawai K, et al: Endoscopie induction of the electromyogram from the human gastrointestinal canal. Endoscopy 7: 139–141, 1975
3. Akasaka Y, Kawai K, et al: Electromyographic study of the postoperative function of duodenal papilla - Does the endoscopic sphincterotomy of the ampulla of vater destroy the bile flow mechanism? - Amer J Gastroent 66: 337–342, 1976
4. Rost F: Die Funktionelle Bedeutung der Gallenblase - Experimentelle und Anatomische Untersuchungen nach Cholezystektomie - Mitt Grenz Med Chir 26: 710–770, 1913
5. Boyden EA: The anatomy of the choledochoduodenal junction in man. Surg Gyne & Obstet 104: 641–652, 1957