@book { ImmobilienanlagenimPrivateBanking,
    title = "Immobilienanlagen im Private Banking",
    author = "Rosemarie {Denk-Schumann}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832431143",
    url = "https://m.diplom.de/document/218820"
}