1. , , , (1993): “Health Hazard Evaluation Report HETA 90–013 (LA Times)”. Cincinnati: Hazard Evaluation and Technical Assistance Branch, DSHEFS, NIOSH, DHHS.
2. Bureau of Labor Statistics (BLS) (1990): Reports on Survey of Occupational Injuries and Illnesses in 1977–1989. Washington, DC: Bureau of Labor Statistics, US Dept. of Labor.
3. , , , (1990): “Health Hazard Evaluation Report HETA 89–250–2046 (Newsday)”. Cincinnati: Hazard Evaluation and Technical Assistance Branch, DSHEFS, NIOSH, DHHS.
4. , (1981): Psychosocial factors contributing to job stress of clerical VDT operators. In Salvendy G, Smith M (eds): “Machine Pacing and Occupational Stress: Proceedings of the International Conference (Purdue University)”. London: Taylor & Francis.