Forouhid, Amir Esmael, Ali Mansour Khaki, and Seyed Shirazian. “Mathematical Analysis of Noise in Multi-Plant Industries of Tyre and the Need to Reduce Noise”. Journal of Progressive Research in Mathematics 3, no. 1 (March 31, 2015): 140-146. Accessed May 19, 2024. http://scitecresearch.com/journals/index.php/jprm/article/view/87.