@book { PolitischeVereineGesellschaftenundParteieninZentraleuropa1815184849,
    title = "Politische Vereine, Gesellschaften und Parteien in Zentraleuropa 1815-1848/49",
    author = "Helmut {Reinalter}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099838"
}