@book { DeutschimNorden,
    title = "Deutsch im Norden",
    author = "Lars {Wollin} and Dagmar {Neuendorff} and Michael {Szurawitzki}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106395"
}