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* [http://zerototravel.com/podcast/hitchhiking-hitchwiki/ Hitchhiking: Myths, Facts and Beyond] podcast, June 2014
* [http://www.thoughtcrime.org/tour/index.html A Hitchhiker's Audio Tour Of The United States]
* [https://soundcloud.com/abgefahren The Abgefahren e.V. Podcast and Audio Collection]
= Scientific articles and research =