@book { VorkolonialeAfrikaPenetrationen,
    title = "Vorkoloniale Afrika-Penetrationen",
    author = "Florian {Krobb}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b10755",
    url = "https://www.peterlang.com/document/1110011"
}