When were the first papers of the authors of 'Chaotic characterisation of frontal normal gait for human identification' published?
Mention the year in which the first papers of the authors of 'Chaotic characterisation of frontal normal gait for human identification' were published.
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/conf/eusipco/LeeBLSL07> <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/eusipco/LeeBLSL07>