Saikaew, Charnnarong, Sermsak Wiengwiset, and Apai Sriboonruang. 2017. “Improving the properties of sand molds in the iron casting industry using mixture experiments”. Asia-Pacific Journal of Science and Technology 16 (2):169-78. https://so01.tci-thaijo.org/index.php/APST/article/view/83201.