Heiss, H. W.; Hurst, J. Willis (1992). "Werner Forssmann: A German Problem with the Nobel Prize". Clinical Cardiology15 (7): 547–9. doi:10.1002/clc.4960150715. பப்மெட்:1499182.
Heiss, H. W.; Hurst, J. Willis (1992). "Werner Forssmann: A German Problem with the Nobel Prize". Clinical Cardiology15 (7): 547–9. doi:10.1002/clc.4960150715. பப்மெட்:1499182.