1. Particles in Our Air: Concentrations and Health Effects,1996
2. Air Quality Criteria for Particulate Matter;U.S. EPA,1999
3. Review of the National Ambient Air Quality Standards for Particulate Matter: Policy Assessment of Scientific and Technical Information;Bachmann,1996
4. Closure by the Clean Air Scientific Advisory Committee (CASAC) on the Staff Paper for Particulate Matter;Wolff,1996
5. Federal Register, 62 FR 38652, July 18, 1997.