“PECS+: An Intelligent Hybrid Communication System Integrating Phase-Locked Learning Architecture, NFC-Based Interaction, Adaptive Learning, and Emotion Recognition”. The Eurasia Proceedings of Educational and Social Sciences 50 (July 30, 2026): 43–55. Accessed August 26, 2026. https://www.epess.net/index.php/epess/article/view/1045.