1. Applied Decision Analysis, Inc. 1994. EPRI Investment Strategies Project, Volume 1: Value of Flexibility and Modularity of Distributed Generation. Electric Power Research Institute, TR-104171.
2. Arizona Administrative Code, 2001. R14-2-1618, Environmental Portfolio Standard, adopted by the Arizona Corporation Commission in Decision No. 63364.
3. Arizona Tradable Credits Committee, 2001. Memorandum on Final Wording: Tradable Credits. Submitted to the Arizona Corporation Commission Staff.
4. Automated Power Exchange, 1999. Automated Power Exchange announces prices for APX green tickets in first five months of trading, Cupertino, CA.
5. An economic analysis of transfer of development rights;Berry;Natural Resources Journal,1977