Shapiro, R.: Myelography, p. 239. Yearbook Medical Publishers, Inc., Chicago, 1968.
2.
Lombardi, G. , and Passerini, A.: Multiple lesions of the spinal cord. Am. J. Roentgenol., 92: 1298-1300, 1964 .
3.
Krishnan, K.R. , and Smith, W.T.: Intramedullary hemangioblastoma of the spinal cord associated with pial varicosities simulating intradural angioma . J. Neurol., Neurosurg., and Psych., 24: 350-352, 1961.
4.
Wyburn-Mason, R.: The vascular abnormalities and tumors of the spinal cord and its membranes , 196 pgs. Kimpton, London, 1943.
5.
Elsberg C.A.: Surgical diseases of the spinal cord, membranes, and nerve roots, 598 pgs. Paul B. Hoeber, Inc., New York, 1941.
6.
Yasargil, G.M. : Surgery of vascular lesions of the spinal cord with microsurgical technique. Clin. Neurosurg., 17: 257-265. 1970.
7.
DiChiro, G., Doppman, J.L., and Ommaya, A.K.: Radiology of spinal cord arteriovenous malformations. Prog. Neurol. Surg., 4: 329-354, 1971.
8.
Djindjian, R.: Angiography of the spinal cord, 482 pgs. University Park Press, Baltimore, 1970.