@book { StaatszerfallinSubsaharaAfrika,
    title = "Staatszerfall in Subsahara-Afrika",
    author = "Ferdinand {Kosak}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656100904",
    url = "https://www.hausarbeiten.de/document/186924"
}