Dương Vĩnh Nghi, and Nguyễn Nhựt Phi Long. “Research on Applicability of Steel SKD61 to Improve Press-Screw Shaft Life in Ricehusk Briquette Machine”. Journal of Technical Education Science, vol. 12, no. 4, Oct. 2017, pp. 60-64, https://www.jte.edu.vn/index.php/jte/article/view/565.