Conjunctive Query Containment and Answering under Description Logics Constraints

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\begin{bibtex} @article{DBLP:journals/corr/abs-cs-0507067, author = {Diego Calvanese and Giuseppe De Giacomo and Maurizio Lenzerini}, title = {Conjunctive Query Containment and Answering under Description Logics Constraints}, journal = {CoRR}, volume = {abs/cs/0507067}, year = {2005}, ee = {http://arxiv.org/abs/cs/0507067}, bibsource = {DBLP, http://dblp.uni-trier.de} }\end{bibtex}