„Τρισάγιον – in the Byzantineand Old Bulgarian Liturgical Practice. Characteristics, Features and Use in the Liturgical Tradition of the Church“, FThS, бр. 1, стр. 7–60, Май 2025, отворен на: 15 Октомври 2025. [онлайн]. достъпен на: https://periodicals.uni-sofia.bg/index.php/forum-theologicum-sardicense/article/view/408