In 2021 in Int. J. Comput. Intell. Syst., what are the titles of the papers on Salesman problem?
In the year 2021 in Int. J. Comput. Intell. Syst., what are the titles of the research papers on Salesman problem?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/ijcisys/RenWWW21> <https://dblp.org/rdf/schema#publishedIn> 'Int. J. Comput. Intell. Syst.' . <https://dblp.org/rec/journals/ijcisys/RenWWW21> <https://dblp.org/rdf/schema#yearOfPublication> '2021' . <https://dblp.org/rec/journals/ijcisys/RenWWW21> <https://dblp.org/rdf/schema#title> ?answer }
<https://dblp.org/rec/journals/ijcisys/RenWWW21>