@book { DieLiteraturderSlawen,
    title = "Die Literatur der Slawen",
    author = "Reinhard {Ibler} and Ivo {Pospisil}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1096372"
}