1. Viewing distance at computer workstations;Ankrum;Workplace Ergon,1996
2. American National Standard for Human Factors Engineering of Visual Display Terminal Workstations,1988
3. Benz, C., Grob, R., Haubner, P., 1983. Designing VDU workplaces. (German edition: Gestaltung von Bildschirm-Arbeitsplätzen). Köln: Verlag TÜV, Rheinland.
4. Chen, C.Y., Zhong, T.D., 1999. An Ergonomic Development for VDT Workstation. Published by the Institute of Occupational Safety and Health Council of Labor Affairs, Executive Yuan, Republic of China, IOSH88-H326.
5. Do video display units cause visual problems?—A bedside story about the processes of public health decision-making;Cole;Clin. Exp. Optom.,2003