1. Baclesse, F.: Tumeurs malignes du Pharynx et du Larynx. Etude anatomotopographique et radiologique. Paris. Masson Edit., 1960.
2. Observer variation in the endoscopic diagnosis of esophageal varices;Conn;New Eng. J. Med.,1965
3. Atlas of Tumor Radiology;Fletcher,1968
4. Laryngograms: Their value in the diagnosis and treatment of laryngeal lesions. A study based on clinical, radiographic, and pathologic findings on 99 patients with cancer of the larynx;Ogura;Laryngoscope,1960
5. Seaman, W. B.: Laryngography — Technic, Normal Anatomy and Variants. Talk presented at the Postgraduate Seminar in Radiographic Diagnosis of the Head and Neck, University of Florida, March 1968.