@conference{620151, author = "", booktitle = "Workshop; Early Medieval tesserae in northwesetrn Europe (VIth-Xth century), Paix Dieu, Belgium", keywords = "The chemical composition of the carolingian Tessellae", month = "19.03.2015-20.03.201", title = "{T}he chemical composition of the carolingian {T}essellae from the {A}achen cathedral and their relationship to other glass finds.", year = "2015", }