1. American National Standards Institute,Safe Use of Lasers. Standard Z-136.1, New York: ANSI, 1430 Broadway, 1973, 1976, 1980, 1986.
2. American National Standards Institute,Safe Use of Fiber Optic Lasers. Standard Z-136.2, Laser Institute of America, New York: ANSI, 1430 Broadway, 1988
3. American National Standards Institute,Laser Safety in Health Care Facilities. Standard Z-136.3, Laser Institute of America, New York: ANSI, 1430 Broadway
4. Center for Devices and Radiological Health, Federal Performance Standards for Laser Products,Food and Drugs. Title 21,Code of Federal Regulations, Section 1040. Rockville: CDRH 1985.
5. International Electrotechnical Commission (IEC),Radiation Safety of Laser Products, Equipment Classification, and User's Guide, Publication WS-802, Geneva, IEC, 1984.