1. Diverticula of the esophagus;Posthletwait,1986
2. The mouth of the esophagus;Killian;Laryngoscope,1907
3. A case of obstructed deglutition from a preternatural dilatation of, and a bag formed, in the pharynx;Ludlow;Medical Observations and Inquiries of the Society of Physicians,1760
4. Krankheiten des Oesophagus;Zenker,1877
5. Zenker's diverticulum is a disorder of upper esophageal sphincter opening;Cook;Gastroenterology,1993