Which author named Ou published the paper on Control strategy?
Which author published the paper on Control strategy and has the name Yongsheng?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/iros/OuX03> <https://dblp.org/rdf/schema#authoredBy> ?answer }
<https://dblp.org/rec/conf/iros/OuX03>