1. Single, circumscribed, intrathoracic densities;Abeles;New England J. Med.,1951
2. The significance of solitary intrapulmonary tumors;Davis;S. Clin. North America,1950
3. Solitary lung tumors;Effler;Am. Rev. Tuberc.,1951
4. The problem of the solitary lung tumors;Effler;Surgery,1948
5. Coin lesions of the lung;Fink;Minnesota Med.,1951