Castaldi, Tommaso. “The Iconography of the Virgin of Mercy and of the Virgin of Arrows in the Art of Bologna and Romagna in the 14th and 15th Centuries”. Eikón / Imago 4, no. 1 (June 7, 2015): 31–56. Accessed July 10, 2026. https://revistas.ucm.es/index.php/EIKO/article/view/73425.