@book { SystemtransformationimpostkommunistischenPolen,
    title = "Systemtransformation im postkommunistischen Polen",
    author = "Sebastian {Liebram}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656327431",
    url = "https://www.hausarbeiten.de/document/205452"
}