1. Working with visual display units;Lee;Brit. Med. J.,1985
2. Visual and muscular fatigue in operators using visual display terminals;Ong;J. Human Ergo.,1981
3. Postural problems at office machine work station;Grandjean,1984
4. Predictors of strain in VDT users and traditional office workers;Sauter,1984
5. VDTs— a bane or a boom?;Koh;Straits Times,1981