1. Stimulated optical radiation in ruby;Maiman;Nature,1960
2. Safety of laser products. Equipment classification and requirements,2007
3. Medicines and Healthcare products Regulatory Agency. DB 2008(03) Guidance on the safe use of lasers, IPL systems and LEDs. Also available at: http://www.mhra.gov.uk/Publications/Safetyguidance/DeviceBulletins/CON014775; (accessed 1 November 2010).
4. Basic physics and measurement in anaesthesia,2003
5. Laserfest: celebrating 50 years of laser innovation, http://www.laserfest.org; (accessed 21 October 2010).