@book { ForschungenzuKurmainzunddemReichserzkanzler,
    title = "Forschungen zu Kurmainz und dem Reichserzkanzler",
    author = "Peter C. {Hartmann} and Ludolf {Pelizaeus}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099401"
}