Which papers did Qian, Depei and Qian, Xuehai write together?
Find the papers written by Depei Qian and Xuehai Qian together.
SELECT DISTINCT ?answer WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/08/4002> . ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/42/5189> }
<https://dblp.org/pid/08/4002> <https://dblp.org/pid/42/5189>