1. SourceWatchhttp://www.sourcewatch.org/index.php/Category:Proposed_coal_plants_in_the_Philippines
2. Sustainability Issues Due to Coal Ash from Coal Fired Power Plants Phase 1: Impact Assessment of Coal Ash Dumping in a Typical Power Generating Facility;Gallardo,2012
3. Philippines Coal Consumption by Yearhttp://www.indexmundi.com/energy.aspx?country=ph&product=coal&graph=consumption
4. Power Engineering Internationalhttp://www.powerengineeringint.com/articles/2015/06/23-new-coal-fired-power-plants-for-philippines.html
5. Geopolymer technology: the current state of the art