TY JOUR TI SOME ISSUES OF THE ADVERSARIAL PRINCIPLE I N SOVIET CRIMINAL PROCEDURE (THEORY AND PRACTICE) KW evidence KW preliminary investigation KW equality of participants KW adversarial proceedings KW stages JO VESTNIK ADVANCED TRAINING INSTITUTE OF THE MIA OF RUSSIA AU Golubovskiy, V.Y. PY 2026 IS 0 PB All-Russian Advanced Training Institute of the Ministry of the Interior of the Russian Federation