A. Mikheeva, “Church Singing and Manuscripts Notated with ‘Kriuki’ in the Collection of the Ural Old Believer Chapel”, State, Religion and Church, vol. 43, no. 1, pp. 111–134, Jan. 2025, Accessed: Nov. 08, 2026. [Online]. Available: https://state-religion-church.owebs.ru/article/view/11551