1. Aprill C, Axinn MJ, Bogduk N. Occipital headaches stemming from the lateral atlanto-axial (C1-2) joint. Cephalalgia. 2002;22(1):15–22.
2. Busch E, Wilson PR. Atlanto-occipital and atlanto-axial injections in the treatment of headache and neck pain. Reg Anesth. 1989;14 Suppl 2:45.
3. Narouze S. Atlanto-axial and atlanto-occipital joints injection in the treatment of headache and neck pain. In: Deer T et al. (editors). Comprehensive treatment of chronic pain by medical, interventional, and, and integrative approaches. New York: Springer; 2013.
4. Bogduk N. The neck and headache. Neurol Clin. 2004;22(1):151–71.
5. Ehni G, Benner B. Occipital neuralgia and the C1-2 arthrosis syndrome. J Neurosurg. 1984;61:961–5.