@book { TowardsanOpenHigherEducationSystemintheEuropeanUnion,
    title = "Towards an Open Higher Education System in the European Union",
    author = "Kenân {Özkara}",
    year = "2006",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638490313",
    url = "https://www.hausarbeiten.de/document/53635"
}