@book { GrenzlandspracheUntersuchungderSprachenundIdentitteninderRegionLebus,
    title = "Grenzlandsprache. Untersuchung der Sprachen und Identitäten in der Region Lebus",
    author = "Anna {Zielińska}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16251",
    url = "https://www.peterlang.com/document/1063457"
}