[1]
Konev, B., Kontchakov, R., Ludwig, M., Schneider, T., Wolter, F. and Zakharyaschev, M. 2011. Conjunctive Query Inseparability of OWL 2 QL TBoxes. Proceedings of the AAAI Conference on Artificial Intelligence. 25, 1 (Aug. 2011), 221-226. DOI:https://doi.org/10.1609/aaai.v25i1.7846.