H. Al khaqani, Baraa. “Study the Addition Effect of Nano &Micro Titanium on the Mechanical Properties of PMMA Composites”. Journal of University of Babylon for Engineering Sciences 28, no. 1 (1): 1 - 8. Accessed June 5, 2020. https://journalofbabylon.com/index.php/JUBES/article/view/2836.