@book { UntersuchungenzurSyntaxniederdeutscherDialekte,
    title = "Untersuchungen zur Syntax niederdeutscher Dialekte",
    author = "Heinz-Wilfried {Appel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102870"
}