query: SELECT *
  {
      hint:Query hint:optimizer "None".
  	?item wdt:P31 wd:Q13442814  .
      FILTER NOT EXISTS  { ?item wdt:P1433 [] }
      ?item wdt:P433 ?issue . 
      ?item wdt:P478 ?volume . 
      ?item wdt:P304 ?pages . 
  }
  LIMIT 100