Hammer, Carl. «Liutpiriga Ducissa. The Eighth-Century Tassilo Chalice and Liutpirc’s Bavarian Reign Reconsidered». Reti Medievali Rivista 26, no. 1 (maggio 22, 2025): 9–27. Consultato novembre 22, 2025. https://serena.sharepress.it/index.php/rm/article/view/10728.