Who are the co-authors of Haibo Du?
With which other authors has the author Haibo Du written papers?
SELECT DISTINCT ?answer WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/23/8131> . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer FILTER(?answer != <https://dblp.org/pid/23/8131>) }
<https://dblp.org/pid/23/8131>