Shinohara, Masanori, Mayumi Okamoto, Yasuhiro Okui, and Takamitsu Tanaka. “Invited Paper: Effective Retrieval of Educational Resources by Using Learning Object Metadata for K-12 Schools in Japan”. International Conference on Dublin Core and Metadata Applications (October 24, 2001): pp. 255–258. Accessed April 5, 2025. https://dcpapers-past.dublincore.org/pubs/article/view/679.