TY JOUR TI SOME PROBLEMS OF INVESTIGATING CRIMES, ORGANIZED CRIMINAL GROUPS FORMED ON AN ETHNIC BASIS KW criminalistic methodology KW crime investigation KW ethnic crime KW organized criminal groups KW migration JO VESTNIK ADVANCED TRAINING INSTITUTE OF THE MIA OF RUSSIA AU Admiralova, I.A. AU ABDURAHMANOV, A.A. PY 2024 IS 0 PB All-Russian Advanced Training Institute of the Ministry of the Interior of the Russian Federation