SKІEPУAN A. 2023. OFFICIAL FESTIVE CEREMONIES IN POLOTSKY AND VITEBSK VOIVODESHIPS (LANDS) IN THE XV – XVIII CENTURIES. Vestnik of Polotsk State University. Part A. Humanities. 1 (Feb. 2023), 28-34. DOI:https://doi.org/10.52928/2070-1608-2023-66-1-28-34.