1. Renal-cell carcinoma;Halpern;New Engl. J. Med.,1964
2. Angiography in renal tumours. Its value in diagnosis and differential diagnosis as a complement to conventional methods;Folin;Acta Radiol.,1967
3. Halpern, M.: Personal communication.
4. Misleading appearances in renal angiography;Becker;Radiology,1967
5. Selective angiography in renal tuberculosis;Frimann-Dahl;Acta Radiol,1958