Atsawaraungsuk, S., T. Katanyukul, and P. Polpinit. “Identity activation structural tolerance online sequential circular extreme learning machine for highly dimensional data”. Engineering and Applied Science Research, vol. 46, no. 2, June 2019, pp. 120-9, https://ph01.tci-thaijo.org/index.php/easr/article/view/153126.