Hans-Ulrich Krieger. An efficient direct implementation of equivalence relations in OWL.  In Research report / Deutsches Forschungszentrum für Künstliche Intelligenz ; RR-11-01, DFKI,   2011.
 @InProceedings{Kri2011b,
        AUTHOR = {Krieger, Hans-Ulrich},
        TITLE = {An efficient direct implementation of equivalence relations in OWL},
        YEAR = {2011},
        BOOKTITLE = {Research report / Deutsches Forschungszentrum für Künstliche Intelligenz ; RR-11-01},
        PUBLISHER = {DFKI} } 
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