@book { AlteundneueWeltinhistorischerPerspektive,
    title = "Alte und neue Welt in historischer Perspektive",
    author = "Hans R. {Guggisberg}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069446"
}