query: SELECT ?count ?author ?authorLabel 
  WITH {
    SELECT (COUNT(?citing_work) AS ?count) ?author WHERE {
      ?work wdt:P50 ?author .
      ?author wdt:P21 wd:Q6581072 .
      ?citing_work wdt:P2860 ?work
    }
    GROUP BY ?author 
    ORDER BY DESC(?count)
    # LIMIT 100
  } AS %result
  WHERE {
    INCLUDE %result
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }
  ORDER BY DESC(?count)
            