With which other authors has the author Rubiao M. written papers?
Mention the co-authors of Rubiao M..
SELECT DISTINCT ?answer WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/135/8999> . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer FILTER(?answer != <https://dblp.org/pid/135/8999>) }
<https://dblp.org/pid/135/8999>