@book { DieMachtderSpiegel,
    title = "Die Macht der Spiegel",
    subtitle = "Das Spiegelmotiv in Literatur und Ästhetik des Zeitalters von Klassik und Romantik",
    author = "Erik {Peez}",
    year = "1990",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1077692"
}