@book { DeutschalsRegionalspracheundKontaktsprache,
    title = "Deutsch als Regionalsprache und Kontaktsprache",
    author = "Doris {Sava} and Ioan {Lăzărescu}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b20175",
    url = "https://www.peterlang.com/document/1294527"
}