@book { DasBildMariensinderDeutschenMystikdesMittelalters,
    title = "Das Bild Mariens in der Deutschen Mystik des Mittelalters",
    author = "Marzena {Gorecka}",
    year = "1999",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1089358"
}