Mention the year in which the first papers of the authors of 'The MATS robotic system to assist disabled people in their home environments' were published.
In which year were the first papers of the authors of 'The MATS robotic system to assist disabled people in their home environments' published?
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/conf/iros/GimenezBSG03> <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/iros/GimenezBSG03>