@book { SpracheSystemundFunktion,
    title = "Sprache – System und Funktion",
    subtitle = "Festschrift für Günter Weise",
    author = "Rudolf {Beier}",
    year = "1996",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1083897"
}