Stoyanova, Polina, and Marina Doychinova-Ilchev. “A Hoard of Protomiliarenses (?) of Constantine I With Crispus and Constantine II Caesars Found Near the Northern Fortress Wall of Serdica”. Bulgarian Numismatic Journal 1 (December 31, 2025): 241–276. Accessed July 26, 2026. https://bulgnj.com/index.php/e-journal/article/view/176.