@book { AlkaloideausdemAphrodisiakumCatuaba,
    title = "Alkaloide aus dem Aphrodisiakum Catuaba",
    author = "Wolfgang {Stindl}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832445461",
    url = "https://m.diplom.de/document/219940"
}