@book { EduardBernsteinsPanorama,
    title = "Eduard Bernsteins Panorama",
    subtitle = "Versuch, den Revisionismus zu deuten",
    author = "Hans-Peter {Jäger}",
    year = "1982",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1071727"
}