1. A case of primary chondroma of the bronchus;Davidson, M.;Brit. J. Surg,1941
2. A case of pure endobronchial chondroma;J. thorac. Surg,1960
3. Solitary chondroma of the right main bronchus;Doyle-Kelly, W.;J. Laryng,1960
4. Lebert, H. (1845). Physiologie Pathologique, Vol. 2, p. 213. Bailli6re, Paris.
5. Atlas of Tumor Pathology, Section 5-Fascicle;Liebow, A.A.,1952