BreigA: Biomechanics of the central nervous system. Almqvist and Wiksell, Stockholm1961.
2.
BraakmanRPenningL: Injuries of the cervical spine. Excerpta Medica, Amsterdam1971.
3.
ReidJD: Effects of flexion-extension movements of the head and spine upon the spinal cord and nerve roots. J Neurol, Neurosurg Psych23: 214, 1960.
4.
PenningLWilminkJT: CT myelography findings in degenerative disorders of the cervical spine. Am J Neuroradiol7: 119–127, 1986. Am J Radiol1986.
5.
PenningLWilminkJT: Biomechanics of the spinal canal. Clinical Biomechanics1: 228–232, 1986.
6.
PenningLWilminkJT: Biomechanics of lumbosacral dural sac. A study of flexion extrusion myelography. Spine6: 398–408, 1981.
7.
WilminkJTPenningLV/d BergW: Role of stenosis of spinal canal in L4–5 nerve root compression assered by flexion-extension myelography. Neuroradiology26: 173–180, 1984.
8.
McLvorGWDKirkaldy-WillisWH: Pathologic and myelographic changes in the major types of lumbar stenosis. Clin Orthop115: 72–76, 1986.
9.
PenningLWilminkJT: Posture dependent bilateral compression of L4 or L5 nerve roots in facet hypertrophy. A dynamic CT-myelographic study. Spine12: 488–500, 1987.