1. The probability of the chance occurrence of multiple malignant neoplasms;Bugher;Am. J. Cancer,1934
2. Neoplastic Diseases; a Treatise on Tumors;Ewing,1928
3. Multiple primary carcinomas;Hanlon;Am. J. Cancer,1931
4. Metachronous multiple malignancies in 5,876 cancer patients;Peller;Am. J. Hyg.,1941
5. The multiplicity of origin of malignant tumors; collective review;Slaughter;Internat. Abst. Surs.,1944