Was a paper not not co-authored by Michael Knobloch and Sebastian L\u00FChrs?
Didn't Michael Knobloch and Sebastian L\u00FChrs not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/14/10955> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/179/7976> }
<https://dblp.org/pid/14/10955> <https://dblp.org/pid/179/7976>