@book {2021, title = {L{\textquoteright}architecture carolingienne en France et en Europe}, year = {2021}, pages = {290}, publisher = {Picard}, organization = {Picard}, address = {Paris}, isbn = {978-2-7084-1182-1}, author = {H{\'e}ber-Suffrin, Fran{\c c}ois and Sapin, Christian} }