@book{ title = "Zum Stand des Niederdeutschen heute", author = "Menge, Heinz H.", year = "1997", publisher = "Isensee-Verl.", address = "Oldenburg", language = "ger", isbn = "389598440X", keywords = "Niederdeutsch", series = "Vorträge der Oldenburgischen Landschaft, 28", }