J J Evers

Mechanical effects of continuous passive motion on the lumbar spine in seating.

C J Snijders, R H Goossens, M Lengsfeld, 2000, Journal of biomechanics.

Length of the spine while sitting on a new concept for an office chair.

F C van der Helm, R H Goossens, F. V. D. van der Helm, 2000, Applied ergonomics.