@book { NachhaltigerTourismusinSubsaharaAfrika,
    title = "Nachhaltiger Tourismus in Subsahara-Afrika",
    author = "Nico {Beckert}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04056-2",
    url = "https://www.peterlang.com/document/1047989"
}