1. Christensen J: Motor functions of the pharynx and esophagus. In Johnson LR, Christensen J, Jackson MJ, Jacobson ED, Walsh JH (eds):Physiology of the Gastrointestinal Tract, 2nd ed. New York: Raven Press, 1987, pp 595–612
2. Clouse RE: Motor disorders. In Sleisenger MH, Fordtran JS (eds):Gastrointestinal Disease, 4th ed. Philadelphia: WB Saunders, 1989 pp 559–593
3. Bassotti G, Narducci F, Gaburri M, Bosso R, Papa V, Morelli A: Ruolo della manometria esofagea nella valutazione clinica dei pazienti con disfagia e/o dolore toracico similanginoso non cardiaco: 22 mesi di esperienza.Medicina 5: 434–437, 1985
4. Pope CE: Heartburn, dysphagia, and other esophageal symptoms. In Sleisenger MH, Fordtran JS (eds).,Gastrointestinal Disease, 4th ed. Philadelphia: WB Saunders, 1989, pp 200–203
5. Arndorfer RC, Stef JJ, Dodds, WJ, Linehan JH, Hogan WJ: Improved infusion system for intraluminal esophageal manometry.Gastroenterology 73:23–27, 1977