@book { WendeLiteratur,
    title = "Wende-Literatur",
    author = "Jörg {Fröhling} and Reinhild {Meinel} and Karl {Riha}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089003"
}