Wasn't the paper 'Relaxing of flexible RDF queries: A relative proximity relation-based approach' not published by the author Zhang, F.?
Didn't Zhang, F. publish the paper 'Relaxing of flexible RDF queries: A relative proximity relation-based approach'?
ASK { <https://dblp.org/rec/journals/jifs/TongCZ17> <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/03/4774-1> FILTER NOT EXISTS { <https://dblp.org/rec/journals/jifs/TongCZ17> <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/03/4774-1> } }
<https://dblp.org/pid/03/4774-1> <https://dblp.org/rec/journals/jifs/TongCZ17>