@book { EinzelabschlussnachIFRS,
    title = "Einzelabschluss nach IFRS?",
    author = "Carsten {Heuring}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832497767",
    url = "https://m.diplom.de/document/224848"
}