1. American National Standards Institute (ANSI) ,American National Standard for Safe Use of Lasers, Z136.1, Laser Institute of America, Orlando, FL (2000).
2. REVISION OF GUIDELINES ON LIMITS OF EXPOSURE TO LASER RADIATION OF WAVELENGTHS BETWEEN 400 nm AND 1.4 μm
3. International Electrotechnical Commission (IEC) , “IEC 60825-1 safety of laser products, part 1: Equipment classification, requirements and user’s guide,” 1.2 ed., Geneva (2001).
4. American National Standards Institute (ANSI) ,American National Standard for Safe Use of Lasers, Z136.1, Laser Institute of America, Orlando, FL (1993).