Sethanun, Asst.Prof.Kanchana, Kanikanun Tipayasri, and Nuthawut Weerakornpimol. 2013. “Scheduling Hybrid Flowshops under Machine Eligibility Constraints”. Engineering and Applied Science Research 31 (3):239-56. https://ph01.tci-thaijo.org/index.php/easr/article/view/6754.