“The Use of Some Inorganic Additives to Retard Combustion and Flammabitity of Unsaturated Polyester and Epoxy Resins”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 20, no. 1, Aug. 2017, pp. 29-43, https://jih.uobaghdad.edu.iq/index.php/j/article/view/1310.