Was a paper not not co-authored by Najdawi, M. K. and W. P. Wagner?
Didn't Mohammad K. Najdawi and W. P. Wagner not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/69/3925> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/66/1742> }
<https://dblp.org/pid/69/3925> <https://dblp.org/pid/66/1742>