H. Abdulkareem, M., A. J. Bohan, and A. A. Ati. “The Impact of UnCalcined & Calcined Eggshell Powder As BioFiller for Polylacticacid”. Diyala Journal of Engineering Sciences, vol. 13, no. 4, Dec. 2020, pp. 71-79, doi:10.24237/djes.2020.13409.