@book { DirectorsDealings,
    title = "Directors' Dealings",
    subtitle = "Untersuchung von Performanceeffekten nach meldepflichtigen Aktiengeschäften",
    author = "Frank {Rüttenauer}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836602969",
    url = "https://m.diplom.de/document/228841"
}