TY JOUR TI Legal status of participants of operational investigative activities: problems of theoretical understanding and normative regulation KW Operational investigative activities KW participant of operational investigative activities KW legal status of a person KW operational investigative legal relations KW legal regulation KW legislative improvement. JO Bulletin of the Kaliningrad branch of the Saint-Petersburg University of the Ministry of Internal Affairs of Russia AU Lugovich, S.M. PY 2026 IS PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION