1. British Standard BS1042: Section 2.1:1983 ISO 3966-1977. Method of fluid flow measurement in closed conduits. Part 2 Velocity area methods. Section 2.1 Method using Pitot static tubes
2. Localised air delivery systems in the food industry;Burfoot;Trends in Food Science & Technology,2000
3. Health and Safety Executive (1999). HSE Information Sheet No. 3 revised. Workroom temperatures in places where food is handled. Available from HSE Books, PO Box 1999, Sudbury, Suffolk CO10 6FS