Nguyen, Hoang-Dung, et al. “Embedding the Real-Time AES-128 Encryption into Programmable Logic Controllers for Secure Modbus TCP IP Communications in Industrial Control Systems”. International Journal of Integrated Engineering, vol. 17, no. 9, Dec. 2025, pp. 45-57, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/22589.