Was a paper not not co-authored by Peter C. Maxwell and Gian Paolo Jesi?
Didn't Peter C. Maxwell and Jesi, G. Paolo not co-author a paper?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/05/6455> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/83/6147> }
<https://dblp.org/pid/05/6455> <https://dblp.org/pid/83/6147>