Virender, Rahul O Vashiya, Vikas Kumar, and Ravi Gupta. “Parameters Optimization for Surface Roughness With AFM for Material EN-31”. International Journal of Advance Research in Engineering, Science & Technology 2, no. 6 (June 25, 2015): 168–172. Accessed April 6, 2025. https://ijarest.org/index.php/ijarest/article/view/233.