Dyomina, V.N. 2017. Prayers for the Tsar and the Army in the Texts of the Ceremony of the “Grace Cup” of the Late 17th and Early 18th Centuries. Music Scholarship / Problemy Muzykal’noj Nauki. 1 (Mar. 2017), 14–19. DOI:https://doi.org/10.17674/1997-0854.2017.1.014-019.