@book { AmorundPsyche,
    title = "Amor und Psyche",
    subtitle = "Das Mysterium von Herz und Seele",
    author = "Josefine {Müllers}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108128"
}