When was the paper on Coconut project by University of Vienna, Austria published?
University of Vienna published a paper on Coconut project in what year?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/dagstuhl/Schichl03> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> 'University of Vienna, Austria' . <https://dblp.org/rec/conf/dagstuhl/Schichl03> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/conf/dagstuhl/Schichl03>