?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=+Erd%C5%91s+J%C3%A1nos&rft.aulast=Erd%C5%91s&rft.aufirst=J%C3%A1nos&rft.date=1953.+december+11.&rft.title=D%C3%A9lmagyarorsz%C3%A1g&rft.volume=9&rft.pages=3&rft.issue=290&rft.atitle=Egy+sz%C3%A9p+hangverseny&rft.genre=article