1. Congenital anomalies of the carotid arteries;Lie,196835
2. Absence of the carotid canals at skull base CT;Quint;Radiology,1992
3. Congenital absence of the cervical and petrous internal carotid artery with intercavernous anastomosis;Quint;AJNR Am J Neuroradiol,1989
4. Agenesis of internal carotid artery with intercavernous anastomosis;Midkiff;AJNR Am J Neuroradiol,1995
5. The development of the cranial arteries in the human embryo;Padget;Contrib Embryol Carnegie Inst,1948