query: SELECT ?item ?d ?vol ?publ ?years_since ?d1 ?d2 
  {
    { SELECT ?item ?d ?vol ?d1 ?d2
      WHERE
      {
        ?entry wdt:P1433 wd:Q665807  ; wdt:P478 ?vol ; wdt:P921 ?item .
        ?item wdt:P31 wd:Q5 . 
        OPTIONAL { ?item wdt:P569 ?d1 . FILTER( YEAR(?d1) > 10 )  } .
        OPTIONAL { ?item wdt:P570 ?d2 . FILTER( YEAR(?d2) > 10 )  } .
        FILTER ( BOUND(?d1)  \u007C\u007C  BOUND(?d2) ) 
        BIND( YEAR(COALESCE(?d1, ?d2)) as ?d) 
      }
      ORDER BY ASC(?d)
      LIMIT 200
    }
    ?volitem wdt:P179 wd:Q665807 ; wdt:P478 ?vol ; wdt:P577 ?publ .
    BIND( YEAR(?pub0) as ?publ)
    BIND( YEAR(?pub0) - YEAR(?d) as ?years_since)
  }
  ORDER BY ASC(?d)
  LIMIT 200