Project:Zbmath id deduplication

SPARQL queries

Find all items that have more than one zbmath de number

SELECT ?item (COUNT(?value) AS ?valueCount)
WHERE {
  ?item wdt:P31 wd:Q56887 .
  ?item wdt:P1451 ?value.
}
GROUP BY ?item
HAVING (COUNT(?value) > 1)

This query is most likely correct, but currently produces a timeout.