@book { RobertAlt19051978,
    title = "Robert Alt (1905-1978)",
    author = "Bodo {Friedrich} and Dieter {Kirchhöfer} and Christa {Uhlig}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101282"
}