00616naa#a2200157#i#450# EN\FGKOU VO SPBU MVD ROSSII\bibl\103282 20251025232916.6 2227-7226 20251011b2025####ek#y0engy0150####ca RU Legal grounds for exemption from criminal liability of persons assisting operational investigative activities Journal article St. Petersburg SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION 2025 8 с. Journal article local Polyakov Aleksey Vital'evich vestnikspbmvd.ru