"Contact互联网档案馆的存檔,存档日期2012-10-02.." Smart Wings. Retrieved on 19 February 2012. "Office at Prague airport K letisti 1068/30 160 08 Praha 6 Czech Republic"
travelservice.aero
"Contacts." Travel Service Airlines. Retrieved on 14 November 2011. "Travel Service, a. s. K Letišti 1068/30 160 08 Prague 6 Czech Republic"
"Contact互联网档案馆的存檔,存档日期2012-10-02.." Smart Wings. Retrieved on 19 February 2012. "Office at Prague airport K letisti 1068/30 160 08 Praha 6 Czech Republic"