Chun , Yangha. “Analysis of Cyber Threats in the Connection Section of the Control System and Countermeasures Required”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 6 (April 11, 2021): 412–417. Accessed May 3, 2024. https://www.turcomat.org/index.php/turkbilmat/article/view/1831.