Paunescu, Lucian, Sorin Mircea Axinte, Marius Florin Dragoescu, and Felicia Cosmulescu. “Glass-Ceramic Foams Made of Very High Coal Fly Ash Weight Ratio by the Direct Microwave Heating Technique”. Journal La Multiapp 1, no. 4 (January 2, 2021): 33-42. Accessed April 20, 2026. https://newinera.com/index.php/JournalLaMultiapp/article/view/242.