@book { SchweizerischeSprachforschung,
    title = "Schweizerische Sprachforschung",
    author = " {Schweizerische Landesbibliothek}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069589"
}