[BARR-06]
C. Barrey, G. Saint-Pierre, D. Frappaz, M. Hermier, and C. Mottolese,
"Complete removal of an intraspinal and extraspinal cervical chordoma in one stage using the lateral approach. Technical note",
J Neurosurg Spine, vol. 5, no. 5, pp. (471-5), 2006.