6Oldfield EH, Muraszko K, Shawker TH, et al. Path-ophyology of syringomyelia associated with Chiari I malformation of the cerebellar tonsils implications for diagnosia and treatment. J Neurosurg, 1994, 80:3.
7Levy WJ, Mason L, Hahn JF. Chiari malformation presenting in adults: A surgical experience in 127 cases. Neurosurgery, 1983, 12:377.
8Batzdorf U. Chiari I malformation with syringomyelia: evalution of surgical therapy by magnetic resonance imaging. J Neurosurg, 1988,68:726.
9Welch K, Shillito J. Strand R,et al. Chiari I "malformation" an acquired disorder? J Neurosurg, 1981, 55:604.
10Barry A, Patten BM, Stewart BH. Possible factors in the development of the Amold-Chiari malformation. J Neurosurg, 1957, 14:285.