TY JOUR TI To the question of the legal phenomenon of public operational search measures as an element of the formation of criminal procedural evidence KW vowels operational investigative activities KW the formation of evidence KW law of criminal procedure JO Legal Science and Practice: Journal of Nizhny Novgorod Academy of the Ministry of Internal Affairs of Russia AU Muravyov, M.V. PY 2021 IS 2021 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia