1. U.S. Environmental Protection Agency PM2.5Benefit Per Ton Estimates.http://www.epa.gov/oaqps001/benmap/bpt.html.
2. The influence of location, source, and emission type in estimates of the human health benefits of reducing a ton of air pollution
3. Efficient Pollution Regulation: Getting the Prices Right
4. Delaware Department of Natural Resources and Environmental Control.Delaware Reasonably Available Control Technology (RACT) State Implementation Plan (SIP) Under the 8-h Ozone National Ambient Air Quality Standard (NAAQS). InDelaware Government Register, 2006; Vol.10.
5. Environ Corporation Comprehensive Air Quality Model with Extensions (CAMx): User’s Guide to the Comprehensive Air Quality Model with Extensions (CAMx) Version 2.00.www.epa.gov/scram001/7thconf/information/camx.pdf.