The validity of visual observations to register postural aspects of a manual materials handling job

Looze, M. P. d., Toussaint, H. M., Ensink, J., Mangnus, C., & Beek, A. v. d. 'The validity of visual observations to register postural aspects of a manual materials handling job'. In: Ergonomics, 37(8), 1335-1343, 1994.