Between 'Performance improvement in detection and estimation of MC-CDMA systems over MIMO channels' and 'Towards the model-driven engineering of security requirements for embedded systems', which paper was published earlier?
Which one was published first, 'Performance improvement in detection and estimation of MC-CDMA systems over MIMO channels' or 'Towards the model-driven engineering of security requirements for embedded systems'?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/cee/KumaratharanD10> <https://dblp.org/rdf/schema#yearOfPublication> ?x . <https://dblp.org/rec/conf/re/RoudierIA13> <https://dblp.org/rdf/schema#yearOfPublication> ?y . BIND(IF(?x < ?y, <https://dblp.org/rec/journals/cee/KumaratharanD10>, <https://dblp.org/rec/conf/re/RoudierIA13>) AS ?answer) }
<https://dblp.org/rec/journals/cee/KumaratharanD10> <https://dblp.org/rec/conf/re/RoudierIA13>