1. On concussion ofthe spine;Erichsen, J.E.,1875
2. Possible cerebral origin of the symptoms usually classified under "railway spine.";Walton, G.L.;Boston Medical and SurgicalJournal
3. The effects of compensation on recovery from low-back injury;Greenough, C.G.; Fraser, R.D.;Spine,1989
4. Effect of compensation on emotional state and disability in chronic back pain;Guest, G.H.; Drummond, P.D.;Pain,1992
5. Non-organic physical signs in low-back pain;Waddell, G.; McCulloch, H.A.; Kummel, E.; Venner, R.M.;Spine,1980