1. ACGIH, American Conference of Governmental Industrial Hygienists Inc. Cincinnati, Ohio.
2. ACGIH (1995). Industrial Ventilation (22nd ed.) American Conference of Governmental Industrial Hygienists Inc. Cincinnati, Ohio.
3. Bonney, M.C. (1999). Possible markets and software. Developers Meeting of IDEA Project, University of Nottingham, U.K.
4. Carey, E.J. and Gallwey, T.J. (1998). The use of video techniques to analyse postural stress, In S. Kumar (ed.) Advances in Occupational Ergonomics and Safety 2. Proceedings of the XIIIth Annual International Occupational Ergonomics and Safety Conference (Amsterdam: IOS Press), pp.198-201.
5. Carey, E.J. and Gallwey, T.J. (1999). PATsI: computerised Postural Analysis Techniques for Industry. In P. Mondelo, M. Mattila, and W. Karwowski (eds), Proceedings of the International Conference on Computer-Aided Ergonomics and Safety, CAES '99. Universitat Politecnica de Catalunya, Barcelona.