What papers did Piotr S. publish in BDAS and Eur. J. Oper. Res.?
In BDAS and Eur. J. Oper. Res., what papers did Piotr Szwed publish?
SELECT DISTINCT ?answer WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/69/10106> { ?answer <https://dblp.org/rdf/schema#publishedIn> 'BDAS' } UNION { ?answer <https://dblp.org/rdf/schema#publishedIn> 'Eur. J. Oper. Res.' } }
<https://dblp.org/pid/69/10106>