M., Alalkawi H. J., Ali Yousuf K Khenyab, and Abduljabar H. Ali. 2019. “Improvement of Mechanical and Fatigue Properties for Aluminum Alloy 7049 By Using Nano Composites Technique”. Al-Khwarizmi Engineering Journal 15 (1): 1-9. https://doi.org/10.22153/kej.2019.08.001.