Which papers did Dan O. Popa publish in the last 9 years?
List the papers published by Popa, D. O. in the last nine years.
SELECT DISTINCT ?answer WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/61/5165> . ?answer <https://dblp.org/rdf/schema#yearOfPublication> ?y FILTER(?y > YEAR(NOW())-9) }
<https://dblp.org/pid/61/5165>