In which year were the first papers of the authors of 'Genetic participatory algorithm and system modeling' published?
When were the first papers of the authors of 'Genetic participatory algorithm and system modeling' published?
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/conf/gecco/LiuG13> <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/gecco/LiuG13>