Janthawong, Y., W. Wattanutchariya, and K. Tippayawong. “Application of value stream mapping for analysis and performance improvement of black glutinous rice supply chain”. Engineering and Applied Science Research, vol. 43, Nov. 2016, pp. 334-7, https://ph01.tci-thaijo.org/index.php/easr/article/view/70243.