1. quoted by Barret NR. Chronic peptic ulcer of the oesophagus and “oesopagitis,”;Frank;Br J Surg,1950
2. Maladies des enfants nouveau-nés;Billard,1828
3. Fundoplicatio und Gastropexie bei Refluxkrankheit und Hiatushernie;Rokitanski von,1981
4. Chronic peptic ulcer of the oesophagus and “oesophagitis.”;Barrett;Brit J Surg,1950