Yu, Hsiang Yang, and Huan Tsaih Rua. 2010. “AN INVESTIGATION OF RESEARCH ON EVOLUTION OF ALTRUISM USING INFORMETRIC METHODS AND THE GROWING HIERARCHICAL SELF-ORGANIZING MAP”. Malaysian Journal of Library and Information Science 15 (3):1-17. https://malindojournal.um.edu.my/index.php/MJLIS/article/view/6938.