1. Bronchoesophagology;Jackson,1950
2. Diseases of air and food passages of foreign body origin;Jackson,1936
3. Foreign bodies in the oesophagus: a review of six hundred and two cases;Matheson;J Laryngol Otol,1949
4. Foreign bodies in the air and food passages;Holinger;Trans Am Acad Ophthamol Otol,1962
5. Foreign bodies in air and food passages in the Japanese;Ono;Arch Otolaryng,1965