1. AEP-Ohio 2013 AEP-Ohio fact sheet www.aepohio.com/global/utilities/lib/docs/factsheets/aepohiofactsheet6-2013.pdf
2. Alcoa 2008 June 2008 newsletter-Alcoa's Warrick Power Plant turns on first scrubber www.alcoa.com/locations/usa_warrick/en/news/newsletters/june08.asp
3. Development of energy demand and energy-related CO2 emissions in melt electrolysis for primary aluminium production;Briem;Aluminium,2000