@book { DieLimitedEineAlternativezurGmbH,
    title = "Die Limited - Eine Alternative zur GmbH?",
    author = "Stefan {Ortner}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832497682",
    url = "https://m.diplom.de/document/224841"
}