@book { IndexTracking,
    title = "Index-Tracking",
    subtitle = "Die Anwendung eines 'Genetischen Algorithmus' zur Erzeugung eines optimalen Tracking-Portfolios",
    author = "Lars {Buck}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832478711",
    url = "https://m.diplom.de/document/223124"
}