Which author published the paper on Delay variations and has the name Ji?
Which author named Ji published the paper on Delay variations?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/sensors/DongCGJYC19> <https://dblp.org/rdf/schema#authoredBy> ?answer }
<https://dblp.org/rec/journals/sensors/DongCGJYC19>