@book { DasHochmittelaltereinevernachlssigteEpoche,
    title = "Das Hochmittelalter – eine vernachlässigte Epoche?",
    author = "Lisa {Klocke} and Matthias {Weber M.A.}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16319",
    url = "https://www.peterlang.com/document/1110956"
}