Bowlus CR. Archbishop Theotmar of Salzburg’s Letter to Pope John IX. A Forgery of Bishop Pilgrim of Passau?. SOF [Internet]. 30. November 2021 [zitiert 2. Mai 2025];1(1):1-11. Verfügbar unter: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/7597