Armstrong, T. J., Buckle, P., Fine, L. J., Hagberg, M., Jonsson, B., Kilbom, A., Kuorinka, I. A., Silverstein, B. A., Sjogaard, G., & Viikari-Juntura, E. R. (1993). A conceptual model for work-related neck and upper-limb musculoskeletal disorders. Scandinavian Journal of Work Environment & Health, 19(2), 73-84. Bao, S., Winkel, J., Mathiassen, S. E., & Shahanavaz, H. (1997). Interactive effect of ergonomics and prodution engineering on shoulder-neck exposure- A case study of assembly work in China and Sweden. International Journal of Industrial Ergonomics, 20, 75-85. Bao, S., Silverstein, B., Cohen, M., & Beagle, M. (2000). Upper extremity exposure among poultry processing operators. Paper presented at the IEA2000/HFES2000, S. Diego/EUA. Bernard, B. (1997). Musculoskeletal disorders and workplace factors. A critical review of epidemiologic evidence for work-related musculoskeletal disorders of the neck, upper extremity, and low back pain. National Institute for Occupational Safety & Health, Publ nº 97.141 Bongers, P., De Winter, C., Komplier, M., & Hildebrandt, V. (1993). Psychosocial factors at work and musculoskeletal disease. Scandinavian Journal of Work Environment & Health, 19, 297-312. Bourgeois, F., Lemarchand, C., Hubault, F., Bru, C., Polin, A., & Faucheux, J. M. (2000). Troubles musculoquelettiques et travail - Quand la santé interroge l'organisation. Paris: ANACT. Buckle, P., & Devereux, J. J. (1999). Work-related neck and upper limb musculoskeletal disorders. Bilbau: Agency for Safety and Health at Work. Carnide, F., Veloso, A., Gamboa, H., Caldeira, S., Fragoso, I. (2006). Interaction of biomechanical and morphological factors on shoulder workload in industrial paint work. Clinical Biomechanics, Vol. 21, Sup. 1, S33-S38. Christensen, H. (1986). Muscle activity and fatigue in the shoulder muscles of assembly plant employees. Scandinavian Journal of Work Environment & Health, 12, 582-587. Del Prado-Lu, J. (2007). Anthropometric measurement of Filipino manufacturing workers. International Journal of Industrial Ergonomics, vol. 37, 497-503. Finsen, L. (1999). Biomechanical aspects of occupational neck postures during dental work. International Journal of Industrial Ergonomics, 23, 397-406. Forcier, L., & Kuorinka, I. (2001). Work-related musculoskeletal disorders: Overview. In W. Karwowski (Ed.), International Encyclopedia of Ergonomics and Human Factors (Vol. III, pp. 1625-1632). London: Taylor & Francis. Grant, K. A., Habes, D. J., & Putz-Anderson, V. (1994). Psychophysical frequency and sustained exertion at varying wrist postures for a drill tasks. International Journal of Industrial Ergonomics, 13, 31-39. Hagberg, C., Silverstein, B., Wells, R., Smith, M. J., Hendrick, H., Carayon, P., & Pérusse, M. (1995). Work related musculoskeletal disorders (WMSDs): a reference book for prevention. London: Taylor & Francis. Jonsson, B. (1982). Measurement and evaluation of local muscular strain in the shoulder during constrained work. Journal of Human Ergology, vol. 11, 73-88. Juul-Kristensen, B., Fallentin, N., Hansson, G. A., Madeleine, P., Andersen, J. H., & Ekdahl, C. (2002). Physical workload during manual and mechanical deboning of poultry. International Journal of Industrial Ergonomics, 29, 107-115. Lannersten, L., & Harms-Ringdahl, K. (1990). Neck and shoulder muscle activity during work with different cash register systems. Ergonomics, 33, 49-65. McGill, S., & Norman, R. (1986). Partitioning of the L4/L5 dynamic moment into disc, ligamentous and muscular components during lifting. Spine, 11(7), 666-678. Milerad, E., & Ericson, M. O. (1994). Effects of precision and force demands, grip diameter, and arm support during manual work: an electromyographic study. Ergonomics, 37(2), 255-264. Rohmert, W. (1973). Problems of determination of rest allowances, part 2: determining rest allowances in different human tasks. Applied Ergonomics, 4(3), 158-162. Viikari-Juntura, E. R. (1997). The scientific basis for making guidelines and standards to prevent work-related musculoskeletal disorders. Ergonomics, 40(10), 1097-1117. Wells, R., Moore, A., Potvin, J., & Norman, R. (1994). Assessment of risk factors for development of work-related musculoskeletal disorders (RSI). Applied Ergonomics, 25(3), 157-164. Westgaard, R. H., & Winkel, J. (1997). Ergonomic intervention research for improved musculoskeletal health: a critical review. International Journal of Industrial Ergonomics, vol. 20, 463-500. Winkel, J., & Gard, A. (1988). An EMG study of work methods and equipment in crane coupling as a basis for job redesign. Applied Ergonomics, 19, 178-184. Winkel, J., & Oxenburgh, M. (1990). Towards optimizing physical activity in VDT/office work. In S. L. Sauter & M. Dainoff & J. M. Smith (Eds.), Promoting health and productivity in the computerised office (pp. 94-117). London: Taylor & Francis. Winkel, J., & Mathiassen, S. E. (1994). Assessment of physical work load in epidemiologic studies: concepts, issues and operational considerations. Ergonomics, vol. 37(6), 979-988.