@book { VivreenSuisse19992000LebeninderSchweiz19992000,
    title = "Vivre en Suisse 1999-2000- Leben in der Schweiz 1999-2000",
    author = "Erwin {Zimmermann} and Robin {Tillmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096931"
}