@book { DerletzteWelfeimNorden,
    title = "Der letzte Welfe im Norden",
    author = "Oliver {Auge} and Jan {Habermann} and Frederieke M. {Schnack}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15549",
    url = "https://www.peterlang.com/document/1110960"
}