Kunnapapdeelert, S., and C. Prakasvudhisarn. “Optimal Sample Size Selection for Torusity Estimation Using a PSO Based Neural Network”. Science & Technology Asia, vol. 12, no. 2, Oct. 2015, pp. 64-77, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41518.