@book { DasExperimentBlum,
    title = "Das Experiment Blum",
    subtitle = "Die Volksfront in Frankreich und das Ende der Dritten Republik 1936 – 1940",
    author = "Elisabeth {Bokelmann}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04247-4",
    url = "https://www.peterlang.com/document/1048030"
}