1. Lecture Notes in Computer Science;K. Hori,2005
2. Theodorakis, M., Analyti, A., Constantopoulos, P., Spyratos, N.: Context in Information Bases. In: Proc. of Third IFCIS Conference on Cooperative Information Systems (CoopIS 1998), pp. 260–270 (1998)
3. Lecture Notes in Computer Science;M. Theodorakis,1999
4. Theodorakis, M., Analyti, A., Constantopoulos, P., Spyratos, N.: Querying Contextualized Information Bases. In: Proc. of 24th International Information and Communication Technologies and Programming (ICTP 1999), pp. 260–270 (1999)
5. Theodorakis, M., Analyti, A., Constantopoulos, P., Spyratos, N.: A Theory of Contexts in Information Bases. Information Systems Journal 19(4), 1–54 (2001)