@book { DasVertrauenskalkldesNachfragers,
    title = "Das Vertrauenskalkül des Nachfragers",
    author = "Boris {Rahming}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832461829",
    url = "https://m.diplom.de/document/221637"
}