National Academy of Sciences. 2009. Real Prospects for Energy Efficiency in the United States (Washington, DC: National Academies Press), December (I was lead author of Chapter 4: Industrial Energy Efficiency).
Sharon (Jess) Chandler and Marilyn A. Brown. 2009. Meta-Review of Efficiency Potential Studies and Their Implications for the South, Georgia Institute of Technology School of Public Policy Working Paper #51, August