List the papers published by Ralf K\u00FCsters in the last 9 years.
Which papers did Ralf K\u00FCsters publish in the last 9 years?
SELECT DISTINCT ?answer WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/k/RKusters> . ?answer <https://dblp.org/rdf/schema#yearOfPublication> ?y FILTER(?y > YEAR(NOW())-9) }
<https://dblp.org/pid/k/RKusters>