Chang-Yul Kim, Oh-Jin Kwon, Seokrim Choi, and Yong-Hwan Lee. “Protecting The Networks from Objectionable Contents”. Research Briefs on Information and Communication Technology Evolution 1 (January 15, 2015): 198–207. Accessed February 8, 2026. https://rebicte.org/index.php/rebicte/article/view/23.