Srinakorn, K., and S. Olapiriyakul. “A Workforce Scheduling Model to Reduce Occupational Heat Stress and Labor Cost”. Asia-Pacific Journal of Science and Technology, vol. 25, no. 01, Mar. 2020, pp. APST-25, https://so01.tci-thaijo.org/index.php/APST/article/view/181083.