Christian Pischlöger (2011-01-10). Flughafen Budapest mit leichtem Zuwachs(in de). Austrian Wings. Retrieved on 2011-01-10. Name ok. no license, backlink to Commons
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Christian Pischlöger (2011-02-19). Budapest steigert Passagieraufkommen(in de). Austrian Wings. Retrieved on 2011-02-19. Name ok, no license, backlink to Commons
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Budapest Liszt Ferenc(in hu). Nyelv és Tudomány (2011-03-17). Retrieved on 2011-03-17.