@book { KnockOutOptionsscheineamdeutschenMarkt,
    title = "Knock-Out-Optionsscheine am deutschen Markt",
    author = "Metin {Simsek}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/224715"
}