1. TLVs and BEIs Based on the Documentation for Threshold Limit Values for Chemical Substances and Physical Agents: Biological Exposure Indices;ACGIH,2002
2. Toxicological Profiles for Xylenes;ATSDR (Agency for Toxic Substances and Disease Registry),1995
3. Documentation of the Threshold Limit Values and Biological Exposure Indices;ACGIH,2001
4. Criteria Document for Methyl Alcohol;NIOSH (National Institute for Occupational Safety and Health),1976