1. AMERICAN CONFERENCE OF GOVERNMENT INDUSTRIAL HYGIENISTS (1978). Threshold Limit Values for Chemical Substances and Physical Agents in the Workroom Environment with Intended Changes for 1977. pp. 40, 41
2. Mutagenic Effects of Environmental Contaminants;AMES,1972
3. Carcinogens are Mutagens: A Simple Test System Combining Liver Homogenates for Activation and Bacteria for Detection