1. Die allgemeine chirurgishem pathologie and therapie in 51 Vorlesungen;Billroth,1989
2. Multiple primary malignant tumors: A survey of the literature and a statistical study;Warren;Am J Cancer,1932
3. A patient with six primary carcinomata;La Ferla;Postgrad Med J,1984
4. Multiple primary malignant tumors;Hajdu;J Am Geriatr Soc,1968
5. Renal cell carcinoma of autopsy;Hajdu;J Urol,1967