TY JOUR TI HISTORICAL AND LEGAL ANALYSIS OF THE SOURCES OF CRIMINAL PROCEDURE LAW OF ANCIENT RUSSIA IN THE X–XI CENTURIES KW legal custom KW criminal procedure KW source of law KW «Russian Law» KW Russian Truth KW Pskov judicial charter JO LAW. SAFETY. EMERGENCY SITUATIONS AU Chasovnikova, O.G. AU Bolotin, D.D. PY 2024 IS 2023 PB Saint-Petersburg University of State Fire Service of Emercom of Russia