1. Akbar-Khanzadeh F (1980) Long-term effects of welding fumes upon respiratory symptoms and pulmonary function. J Occup Med 22:337?341
2. Akbar-Khanzadeh F (1981) Combined effects of cigarette smoking and occupational air pollution in welding environment. Med Lavoro 72:61?67
3. Akbar-Khanzadeh F (1984) A personal sampler for measuring shift exposure to welding fumes. Ann Occup Hyg 28:365?371
4. American Conference of Governmental Industrial Hygienists (1992) Threshold limit values for chemical substances and physical agents and biological exposure indices for 1992?1993, Cincinnati, Ohio
5. American Welding Society (1973) The welding environment. AWS Technical Department, Miami, Florida