TY JOUR TI Comparative legal analysis of the conduct of secret investigative actions in the criminal proceedings of the Republic of Kazakhstan and some other post-Soviet countries KW Criminal proceedings KW criminal procedure legislation KW secret investigative actions KW operational-search activity KW special search measures KW investigating judge JO Bulletin of the Kaliningrad branch of the Saint-Petersburg University of the Ministry of Internal Affairs of Russia AU Zaken, S.S. PY 2025 IS 0 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION