Alf L. Nachemson

The Validity of Biomechanical Models of Volitional Activities

Roland Örtengren, Albert B. Schultz, Gunnar B. J. Andersson, 1982 .

Neck and back pain : The scientific evidence of causes, diagnosis, and treatment

Alf L. Nachemson, A. Nachemson, Egon Jonsson, 2000 .