Biblio

Kostylev, E. V., J. L. Reutter, and A. Z. Salamon, "Classification of Annotation Semirings over Containment of Conjunctive Queries", ACM Trans. Database Syst., vol. 39, no. 1, New York, NY, USA, ACM, pp. 1:1–1:39, 2014.

Buneman, P., E. V. Kostylev, and S. Vansummeren, "Annotations Are Relative", Proceedings of the 16th International Conference on Database Theory, New York, NY, USA, ACM, pp. 177–188, 2013.

Kostylev, E. V., J. L. Reutter, and A. Z. Salamon, "Classification of Annotation Semirings over Query Containment", Proceedings of the 31st ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems, New York, NY, USA, ACM, pp. 237–248, 2012.