“Short Communication Some Studies on the Changes in the Composition of Coal Ash and Bottom/Fly Ash Produced in Atmospheric Fluidized Bed Combustor” (2006) Biological Sciences - PJSIR, 49(5), pp. 341–343. Available at: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/1244 (Accessed: 10 March 2026).