1. 2010 Coal Combustion Product Production & Use Survey Report American Coal Ash Association (ACAA), https://www.acaa-usa.org/Portals/9/Files/PDFs/2010_CCP_Survey_FINAL_102011.pdf 2010 (Accessed 13 May 2017).
2. Production and Utilisation of CCPs in 2010 in Europe (EU 15), European Coal Combustion Products Association (ECOBA), http://www.ecoba.com/ecobaccpprod.html, 2010 (Accessed 10 April 2017).
3. Coal combustion products: a global perspective;Heidrich,2013
4. Using coal ash in highway construction: a guide to benefits and impacts,2005
5. Size distribution of trace elements and polycyclic aromatic hydrocarbons in fly ashes generated in Greek lignite-fired power plants;Arditsoglou;Sci. Total Environ.,2004