1. Adelstein, L. J., Spinal extradural cyst associated with kyphosis dorsalis juvenilis. J. Bone Jt Surg. n.s.23 (1941), 93?101.
2. Chynn, K. Y., Congenital spinal extradural cyst in two siblings. Amer. J. Roentgenol.101 (1967), 204?215.
3. Cilluffo, J. M., Gomez, M. R., Reese, D. F., Onofrio, B. M., Miller, R. H., Idiopathic (?congenital?) spinal arachnoid diverticula: clinical diagnosis and surgical results. Mayo Clin. Proc.56 (1981), 93?101.
4. Cilluffo, J. M., Miller, R. H., Posttraumatic arachnoidal diverticula. Acta neurochir. (Wien)54 (1980), 77?87.
5. Cloward, R. B., Spinal extradural cysts. Ann. Surg.105 (1937), 401?407.