Mohd Nor, Mohd Rudzuan Bin, et al. “Design and Development of a Voice-Controlled Humanoid Robotic Mouth for Facial Expression Simulation”. International Journal of Autonomous Robotics and Intelligent Systems (IJARIS), vol. 2, no. 1, June 2026, pp. 53-62, doi:10.58915/ijaris.v2i1.3188.