GAMBACORTA, Federico. Catalogue of the Late Roman, Byzantine and Barbaric coins in the Charles University Collection (364-1092 A.D.). 1st English ed. Prague : Karolinum, 2013. 94 s. Available on Internet: <https://ebookcentral.proquest.com/lib/ujep-ebooks/detail.action?docID=1996733> ISBN 978-80-246-2534-8.