1. Teal, J. S., Rambaugh, C. L., Bergeron, R. T., Scanlon, R. L., Segal, H. D.: Persistent carotid superior cerebellar artery anastomosis: A variant of persistent trigeminal artery. Radiology 103, 335?341 (1972)
2. Newton, T. H., Potts, D. G.: Radiology of the Skull and Brain. Vol. 2, Book 2, pp. 1710?1795, St. Louis: C. V. Mosby 1975
3. Padget, D. H.: Development of the cranial arteries in the human embryo. Contrib. Embryol. (No 212) 32, 205?262 (1948)
4. Takahashi, M.: Atlas of Vertebral Angiography. pp. 350, Baltimore: University Park Press 1974
5. Lie, T. A.: Congenital anomalies of the carotid arteries. Excerpta Medica, Amsterdam 1968