Mohammed, Omar, Al Emran Ismail, AK Kareem, Saifulnizan Jamian, and MN Nemah. 2019. “Distribution of Mode I Stress Intensity Factors for Single Circumferential Semi-Elliptical Crack in Thick Cylinder”. International Journal of Integrated Engineering 11 (7): 102-11. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/5066.