1. Zero Hg Global Campaign. Developments at United Nations Environment Programme (UNEP) Level, 2009; http://www.zeromercury.org/UNEP_developments/index.html.
2. United States Environmental Protection Agency (U.S. EPA). Proposed Rule That Set Standards to Reduce Mercury and Other Toxic Air Pollution from Coal and Oil-Fired Power Plants, March 16, 2011; http://www.epa.gov/airquality/powerplanttoxics/pdfs/proposal.pdf.
3. Commisision of the European Communities. Communication from the Commission to the Council and the European Parliament—Community Strategy Concerning Mercury, 2005; SEC (2205) 101,http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=COM:2005:0020:FIN:EN:PDF.
4. Status review of mercury control options for coal-fired power plants
5. Activated carbon injection in spray dryer/ESP/FF for mercury and toxics control