University of Texas at El Paso, USA published a paper on Cascade vulnerability problem in what year?
When was the paper on Cascade vulnerability problem by University of Texas at El Paso, USA published?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/msv/ServinC08> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> 'University of Texas at El Paso, USA' . <https://dblp.org/rec/conf/msv/ServinC08> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/conf/msv/ServinC08>