World Best Practice Energy Intensity Values for Selected Industrial Sectors. Lawrence Berkeley National Laboratory, 2008. LBNL-62806..
Energy Efficiency Improvement and Cost Saving Opportunities for the U.S. Iron and Steel Industry: An ENERGY STAR® Guide for Energy and Plant Managers. 2010. LBNL-4779E..
"Climate Change 2014 Mitigation of Climate Change." IPCC 5th Assessment Report. The Intergovernmental Panel on Climate Change, 2014..