Article

Barcelo, P. and Libkin, L. and Lin, A.W. and Wood, Peter T. (2012) Expressive languages for path queries over graph-structured data. ACM Transactions on Database Systems 37 (4), ISSN 0362-5915.

Book Section

Barcelo, P. and Hurtado, C.A. and Libkin, L. and Wood, Peter T. (2010) Expressive languages for path queries over graph-structured data. In: UNSPECIFIED (ed.) Proceedings of the Twenty-Ninth ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems of Data. New York, USA: ACM Publications, pp. 3-14. ISBN 9781450300339.

Levene, Mark and Loizou, G. (1995) The additivity problem for data dependencies in incomplete relational databases. In: Libkin, L. and Thalheim, B. (eds.) Semantics in Databases: Selected Papers from a Workshop. Lecture Notes in Computer Science 1358. Springer, pp. 136-169. ISBN 9783540641995.