Phetkrachang, Ketsara, Santi Sathiwantanah, and Authapon Kongwan. 2022. “A Development of Online Question Answering System for Student Registration Web Service of University using Ontology Technology”. KKU Science Journal 50 (1):24-34. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/250295.