References
- Borg G. A.V. A category scale with ratio properties for intermodal and interindividual comparisons. Psychophysical Judgment and the Process of Perception, Petzold H.-G. Geissler. VEB Deutscher Verlag der Wissenschaften, Berlin 1982
- Carlsöö S., Hammarskjöld E. Postures and loads. The Research Foundation for Occupational Safety and Health in the Swedish Construction Industry. Box 1985; 94: S-182, 11 Sweden
- Chaffin D. B., Herrin G. D., Keyserling M., Garg A. A method for evaluating the biomechanical stresses resulting from manual materials handling jobs. Am Ind Hyg Assoc J 1977; 38: 662–675
- Corlett E. N., Manenica I. The effects and measurement of working postures. Applied Ergonomics 1980; 11: 7–16
- Cronbach L. J. Coefficient alpha and the internal structure of tests. Psychometrika 1951; 16: 297–334
- Kristof W. The statistical theory of speed-up reliability coefficients when a test has been divided into several equal parts. Psychometrika 1963; 28: 221–38
- McRae D. J. MICKA, a FORTRAN IV iterative K-means cluster analysis program. Behavl Sci 1971; 16: 423–424
- Murrell K. F. H. Ergonomics. Chapman och Hall. 1965
- Rohmert W. Untersuchungen über Muskelermüdung und Arbeitsgestaltung. Beuth-Vertrieb, Berlin, Köln, Frankfurt 1962
- Stevens S. S., Galanter E. H. Ratio Scales and Category Scales for a Dozen Perceptual Continua. Journal of Experimental Psychology 1957; 54: 377–411
- Van Wely P. Design and disease. Applied Ergonomics 1969; 1: 262–269