@book { FigurenportaleinDeutschland13501530,
    title = "Figurenportale in Deutschland 1350-1530",
    author = "Gernot {Fischer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1077385"
}