@book { DieSamteneRevolution,
    title = "Die Samtene Revolution",
    subtitle = "Vorgeschichte – Verlauf – Akteure",
    author = "Niklas {Perzi} and Beata {Blehova} and Peter {Bachmeier}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106349"
}