1. Environmental Protection Agency (EPA), Hazardous and Solid Waste Management System; Identification and Listing of Special Wastes; Disposal of Coal Combustion Residuals From Electric Utilities, (2010). https://www.federalregister.gov/documents/2010/06/21/2010-12286/hazardous-and-solid-waste-management-system-identification-and-listing-of-special-wastes-disposal-of#print.
2. American Coal Ash Association (ACAA), ACAA 2018 CCP Survey Results and Production & Use, 2020. https://www.acaa-usa.org/publications/productionusereports.aspx.
3. European Coal Combustion Products Association ECOBA, Production and Utilisation of CCPs in 2016 in Europe (EU 15), 2016. http://www.ecoba.com/ecobaccpprod.html.
4. American Society for Testing and Materials, ASTM C618. Standar Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, (2015).
5. United States Environmental Protection Agency (EPA), Coal Ash Basics, (2020). https://www.epa.gov/coalash/coal-ash-basics.