@book { Charlemagneetlesobjets,
    title = "Charlemagne et les objets",
    author = "Philippe {Cordez}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0352-0155-0",
    url = "https://www.peterlang.com/document/1052831"
}