@book { SprachinselweltenTheWorldofLanguageIslands,
    title = "Sprachinselwelten – The World of Language Islands",
    subtitle = "Entwicklung und Beschreibung der deutschen Sprachinseln am Anfang des 21. Jahrhunderts. The Developmental Stages and the Description of German Language Islands at the Beginning of the 21st Century",
    author = "Nina {Berend} and Elisabeth {Knipf-Komlósi}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03120-1",
    url = "https://www.peterlang.com/document/1053601"
}