@book { DasSteuersystemimungarischenTransformationsprozess,
    title = "Das Steuersystem im ungarischen Transformationsprozess",
    author = "Claudia {Ohly}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1098212"
}