M, Rijesh, James Valder, and A O Surendranathan. 2015. “Determination of Friction Factor by Ring Compression Test for Al-5Zn-1Mg Using Graphite and MoS2 Lubricants”. Science & Technology Asia 17 (3):13-19. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41171.