1. Radiography of Oesophageal Obstructions;Houlton;Veterinary Record,1982
2. Thoracic oesophageal foreign bodies in the dog: A review of ninety cases;Houlton;Journal of Small Animal Practice,1985
3. Endoscopic and Surgical Retrieval of Fishhooks from the Stomach and Oesophagus in Dogs and Cats: 75 Cases (1977-1993);Michels;Journal of the American Veterinary Medical Association,1995
4. Transdiaphragmatic approach to distal oesophageal foreign bodies;Taylor;Journal of the American Animal Hospital Association,1982