1. Narasimhachari K. V., & Reddy E. R. (1968), “Missed foreign body in Trachea removed by Tracheostomy.”Indian Journal of Otolaryngohgy,20, 38.
2. Handa, P. S., and Grover, M. S. (1964), “A case of foreign body trachea”.Indian Journal of Otolaryngohgy,26, 212.
3. Garbis Harboyan & Nassey Ramji, (1970), ‘Tracheobronchial foreign bodies—a review of 14 years experience.Journal of Laryngology and Otology,84, 403.