query: SELECT ?author ?authorLabel ?authorstring (COUNT(DISTINCT ?paper) AS ?count) WHERE {
    { ?paper wdt:P921 wd:Q202864 . } UNION { ?paper wdt:P921 wd:Q8071861 . }
    ?paper wdt:P50 ?author .
  #  ?author wdt:P31 wd:Q5.
    MINUS { ?paper wdt:P2093 ?authorstring . }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
  }
  GROUP BY ?author ?authorLabel ?authorstring
  ORDER BY DESC(?count)
  