Saldzhiev, Hristo. „On the Prehistory of Bogomilism – the Historical and Religious Continuum of the Dualistic Groups in Early Medieval Bulgaria (8th–10th Century)”. Studia Ceranea 11 (grudzień 30, 2021): 721–761. Udostępniono grudzień 8, 2025. https://www.czasopisma.uni.lodz.pl/sceranea/article/view/13141.