How many papers did the authors of 'Defect filter for alternate RF test' publish in ETS?
Count the papers published by the authors of 'Defect filter for alternate RF test' in ETS.
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/ets/StratigopoulosMAO10> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#publishedIn> 'ETS' }
<https://dblp.org/rec/conf/ets/StratigopoulosMAO10>