@book { ZukunftsperspektivenimFinancialPlanning,
    title = "Zukunftsperspektiven im Financial Planning",
    author = "Susanne {Hanisch}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832456177",
    url = "https://m.diplom.de/document/221099"
}