@book { FranzXaverKraus18401901,
    title = "Franz Xaver Kraus (1840-1901)",
    author = "Sonja {Tophofen}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02774-7",
    url = "https://www.peterlang.com/document/1047352"
}