@book { ZyklusdichtungindenslavischenLiteraturen,
    title = "Zyklusdichtung in den slavischen Literaturen",
    author = "Reinhard {Ibler}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089536"
}