@book { SpracherhaltundSprachverlustineinerSprachinselsituation,
    title = "Spracherhalt und Sprachverlust in einer Sprachinselsituation",
    author = "Szilvia {Deminger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097931"
}