Srisuwannapa*, Chanin, and Peerayuth Chansethikul. 2018. “Application of Coordinate Transformation with Close-Form Exact Algorithm for Minimizing Maximum Processing Time in the Unbounded Knapsack Problem”. CURRENT APPLIED SCIENCE AND TECHNOLOGY 5 (1). Bangkok, Thailand:366-78. https://li01.tci-thaijo.org/index.php/cast/article/view/162344.