@book { DermittelalterlicheOsterleuchterinSditalien,
    title = "Der mittelalterliche Osterleuchter in Süditalien",
    author = "Michael {Schneider-Flagmeyer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1075078"
}