@book { KlinikdesBlasenpapilloms,
    title = "Klinik des Blasenpapilloms",
    author = "Ernst H. {Büsser}",
    year = "1969",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069195"
}