Was a paper not not co-authored by Huber, M. and Alexander Gruner?
Didn't Huber, M. and Alexander Gruner not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/36/3234-2> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/98/11140> }
<https://dblp.org/pid/36/3234-2> <https://dblp.org/pid/98/11140>