In which year were the first papers of the authors of 'The Need of Performance Indicators for Collaborative Business Ecosystems' published?
When were the first papers of the authors of 'The Need of Performance Indicators for Collaborative Business Ecosystems' published?
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/conf/ifip5-5/GracaC15> <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#yearOfPublication> ?y }
<https://dblp.org/rec/conf/ifip5-5/GracaC15>