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2. Ameling, D., 2008. ABM's 63rd Annual Congress, Santos—SP—Brazil, July 28—August 1, 2008.
3. American Iron and Steel Institute (AISI), 2007. Fact Sheet: U.S. Steel Industry; World Leaders in Energy Efficiency, 2007. 〈http://www.climatevision.gov/sectors/steel/pdfs/AISI-Energy-Efficiency-Fact-Sheet.pdf 〉
4. Asia Pacific Energy Research Centre, 2000. Energy Efficiency Indicators—A study of energy efficiency indicators for industry in APEC economies, Institute of Energy Economics, Japan (IEEJ)/Asia Pacific Energy Research Centre. 〈http://www.ieej.or.jp/aperc/final/efficiency.pdf〉
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