query: SELECT ?item ?itemLabel (GROUP_CONCAT(DISTINCT ?authors; separator=', ') AS ?authorstring)  WHERE {
    ?item wdt:P31 wd:Q13442814.
    ?item wdt:P1433 wd:Q3274923.
    ?item wdt:P478 "30".
    ?item wdt:P433 "9-10".
    ?item wdt:P2093 ?authors.
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  } GROUP BY ?item ?itemLabel ?authorstring