Xue, Na, Su ling Jia, Jin xing Hao, and Qiang Wang. “Ontology Based Scientific Keywords Recommendation System under Web 2.0”. International Journal of Emerging Technologies in Learning (iJET) 8, no. 4 (July 25, 2013): pp. 17–22. Accessed May 6, 2024. https://online-journals.org/index.php/i-jet/article/view/2942.