Report the count of papers that Marc Ditzhaus has published in J. Multivar. Anal..
How many papers has Marc D. published in J. Multivar. Anal.?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/240/4380> . ?answer <https://dblp.org/rdf/schema#publishedIn> 'J. Multivar. Anal.' }
<https://dblp.org/pid/240/4380>