Niyamosoth, Thanawath, Kazuho Yoshimoto, Shunichi Ohmori, Panitas Sureeyatanapas, and Sirawadee Arunyanart. 2021. “An Integrated Model of Preventive Maintenance and Safety Stock for a Used Production Unit under Leasing”. Engineering and Applied Science Research 48 (4):456-65. https://ph01.tci-thaijo.org/index.php/easr/article/view/243175.