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Link to original content: https://dblp.org/rec/conf/sebd/GrecoS14.xml
Gianluigi Greco Francesco Scarcello Counting Solutions to Conjunctive Queries: Structural and Hybrid Tractability. 216-223 2014 SEBD conf/sebd/2014 db/conf/sebd/sebd2014.html#GrecoS14