Frank Hübners Profil in IMDB – The Internet movie Database
http://www.boxofficemojo/ – accurate Box office figures
http://www.variety.com/ – Variety Magazine
http://www.hollywoodreporter.com/ – Hollywood Reporter Magazine
http://www.cinebiz.de/ – The german media database from „Blickpunkt Film“
http://www.screendaily.com/ – The Screen International Magazine