Kriengkorakot, N., and P. Kriengkorakot. “Computer programming for assembly line balancing case study : apparel factory in Ubon Ratchathani”. Engineering and Applied Science Research, vol. 39, no. 2, Dec. 2012, pp. 131-8, https://ph01.tci-thaijo.org/index.php/easr/article/view/3804.