Haberl, H., Cripton, P. A., Orr, T., Beutler, T., Frei, H., Lanksch, W. R., & Nolte, L. (2004). Kinematic response of lumbar functional spinal units to axial torsion with and without superimposed compression and flexion/extension. Springer-Verlag.

Haberl, Hannes, Peter A. Cripton, Tracy-E Orr, Thomas Beutler, Hanspeter Frei, Wolfgang R. Lanksch, ja L.-P Nolte. Kinematic Response of Lumbar Functional Spinal Units to Axial Torsion With and Without Superimposed Compression and Flexion/extension. Springer-Verlag, 2004.

Haberl, Hannes, et al. Kinematic Response of Lumbar Functional Spinal Units to Axial Torsion With and Without Superimposed Compression and Flexion/extension. Springer-Verlag, 2004.