00619naa#a2200157#i#450# EN\FGKOU VO SPBU MVD ROSSII\bibl\75990 20240723112400.2 2227-7226 20240708b2024####ek#y0engy0150####ca RU The concept of «operational contact» in operational investigative activities and its interpretation Journal article St. Petersburg SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION 2024 0 с. Journal article local Popov Sergey Viktorovich russianjournaldeviantbehavior.ru