References
- Zehnder, M. (1938) Zur Technik der Arteriographie. Zbl. f. Neuro-chir., p. 281.
- Engeset, Arne (1944) Cerebral Angiography with Perabrodil (Carotis angiography). Acta Radiologica, Suppl., p. LVI.
- Emblem, Leif (1945) Erfaringer med perkutan angiografi. Lecture. Congress of Northern Neurologists Stockholm
- Kristiansen, Kristian (1946) Perkutan cerebral angiografi, Lecture to the Norwegian Surgical Association, Stavanger