Between 'Structure properties of min-max systems and existence of global cycle time' and 'Leveraging colour segmentation for upper-body detection', which paper was published earlier?
Which one was published first, 'Structure properties of min-max systems and existence of global cycle time' or 'Leveraging colour segmentation for upper-body detection'?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/tac/ZhaoZZ01> <https://dblp.org/rdf/schema#yearOfPublication> ?x . <https://dblp.org/rec/journals/pr/DuffnerO14> <https://dblp.org/rdf/schema#yearOfPublication> ?y . BIND(IF(?x < ?y, <https://dblp.org/rec/journals/tac/ZhaoZZ01>, <https://dblp.org/rec/journals/pr/DuffnerO14>) AS ?answer) }
<https://dblp.org/rec/journals/tac/ZhaoZZ01> <https://dblp.org/rec/journals/pr/DuffnerO14>