@book { GeschichtederRussischenRevolution,
    title = "Geschichte der Russischen Revolution",
    author = "Leo {Trotzki} and Alexandra {Ramm}",
    year = "2017",
    publisher = "MEHRING Verlag",
    address = "Essen, Germany",
    url = "https://mehring.openpublishing.com/document/355415"
}