Minh Bao, Tran, Truong Cong Tuan, and Huynh Trong Duc. “Querying Object-Oriented Databases Based on Signature Graph and N-Ary Tree”. EAI Endorsed Transactions on Context-aware Systems and Applications 3, no. 7 (February 12, 2016): e4. Accessed April 24, 2024. https://publications.eai.eu/index.php/casa/article/view/1994.