1. Outlook for treatment;Beattie,1968
2. Earlier diagnosis and survival in lung cancer;Brett;Brit. Med. J.,1969
3. Clinical Staging System for Carcinoma of the Lung,1973
4. Calcification within the solitary pulmonary nodule;Davis;Am. Rev. Tuberc.,1956
5. Interstitial implantation of radioactive seeds during thoracotomy;Henschke,1968