1. Novelline R. Squire’s fundamentals of radiology. 5th ed. Cambridge, MA: Harvard University Press; 1997. ISBN 0674833392.
2. Steckelberg JM, Ulietstra RE, Ludwig J, et al. Werner Forssmann (1904–1979) and his unusual success story. Mayo Clin Proc. 1979;746:54.
3. Cournand A. Cardiac catheterization: development of the technique, its contribution to experimental medicine and its initial application to man. Acta Med Scand. 1975;579:7.
4. Sones FM Jr, Shirey EK. Cine coronary arteriography. Mod Concepts Cardiovasc Dis. 1962;31:375.
5. Edler I, Hertz CH. The early work on ultrasound in medicine at the University of Lund. J Clin Ultrasound. 1977;5:352–6.