1. Tumors of the Upper Respiratory Tract;Ash,1964
2. Benign tumors and tumor-like conditions of the trachea and bronchi;Caldarola;Ann Otol Rhinol Laryngol,1964
3. Primary carcinoma of the trachea;Culp;J Thorac Surg,1938
4. Primary chondrosarcoma of the tracheobronchial tree;Daniels;Arch Pathol,1967
5. Primary tumors of the trachea;D'Annoy;Arch Pathol,1931