Wongthatsanekorn, Wuthichai, Busaba Phruksaphanrat, and Rataphol Sangkahsuk. 2013. “Applying Bee Colony Optimization Heuristic for Production Scheduling in Make-Pack Manufacturing”. Engineering and Applied Science Research 40 (1):47-56. https://ph01.tci-thaijo.org/index.php/easr/article/view/8566.