@book { LonBlumRepublikanerundSozialist,
    title = "Léon Blum – Republikaner und Sozialist",
    author = "Johannes {Glasneck}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095202"
}