@book { ShareholderValueinderMedienundTelekommunikationsindustrie,
    title = "Shareholder Value in der Medien- und Telekommunikationsindustrie",
    author = "Zong-Hyeck {An}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832415099",
    url = "https://m.diplom.de/document/217356"
}