1. Safety with Lasers and Other Optical Sources;Sliney,1980
2. ACGIH Threshold Limit Values, 1993–1994, Notice of Intended Changes;Appl. Occup. Environ. Hyg.,1993
3. U.S. Code of Federal Regulations, 29 CFR Part 1910.95, Noise, U.S. Government Printing Office, Philadelphia, PA
4. The Noise at Work Regulations,1989
5. Industrial Noise and Conservation of Hearing;Michael,1991