@book { KritischeBetrachtungvonSonderwerbeformen,
    title = "Kritische Betrachtung von Sonderwerbeformen",
    author = "Maik {Alsleben}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832470722",
    url = "https://m.diplom.de/document/222391"
}