When were the first papers of the authors of 'Mining candidate causal relationships in movement patterns' published?
Mention the year in which the first papers of the authors of 'Mining candidate causal relationships in movement patterns' were published.
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/journals/gis/BleischDGLL14> <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/journals/gis/BleischDGLL14>