@book { SayamIstewedordidagrapefruitjustflewby,
    title = "Say, am I stewed or did a grapefruit just flew by?",
    author = "Holger {Metzner}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832459666",
    url = "https://m.diplom.de/document/221416"
}