@book { NorthernIreland,
    title = "Northern Ireland",
    author = "Sabine {Meisner}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638978866",
    url = "https://www.hausarbeiten.de/document/99442"
}