How many papers has Sergei V. Chekanov published in Advanced Information and Knowledge Processing?
In Advanced Information and Knowledge Processing, how many papers has Chekanov, S. V. published?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/21/6272> . ?answer <https://dblp.org/rdf/schema#publishedIn> 'Advanced Information and Knowledge Processing' }
<https://dblp.org/pid/21/6272>