Wansasueb, K., N. Pholdee, and S. Bureerat. “Optimum radii and heights of U-shaped baffles in a square duct heat exchanger using surrogate-assisted optimization”. Engineering and Applied Science Research, vol. 44, no. 2, Apr. 2017, pp. 84-89, https://ph01.tci-thaijo.org/index.php/easr/article/view/66772.