1. Ecker, A., Perl, T., Selective Gasserian injection for tic douloureux. Technical advances and results. Acta radiol.9 (1969), 38?48.
2. Penman, J., A simple radiological aid to Gasserian injection. Lancet2 (1949), 268?274. Idem: Some developments in technique of trigeminal injection, ibid1 (1953), 760?764.
3. Ferner, H., The anatomy of the trigeminal root and the Gasserian ganglion and their relations to the cerebral meninges, p. 6, in: Hassler, R., and Walker, A. E., Eds.: Trigeminal neuralgia. Philadelphia: W. B. Saunders Company. 1970.
4. Henderson, W. R., The anatomy of the Gasserian ganglion and the distribution of pain in relation to injections and operations for trigeminal neuralgia. Ann. Roy. Coll. Surgeons England37 (1965), 346?373.
5. Ecker, A., Perl, T., Precise alcoholic Gasserian injection for tic douloureux. J. Neurol. Neurosurg. & Psychiat.28 (1965), 65?70.