@book { WilhelmLtgertstheologischeKritikdesdeutschenIdealismus,
    title = "Wilhelm Lütgerts theologische Kritik des deutschen Idealismus",
    author = "Gregor {Heidbrink}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/225570"
}