TY JOUR TI COUNTERING THE FORMATION OF ETHNIC (POLIETHNIC) ENCLAVES (ADMINISTRATIVE AND LEGAL ASPECTS) KW ethnic enclave KW state migration policy KW illegal migration KW migrant workers KW administrative measures KW host party policy KW segregation and discrimination KW adaptation of migrants JO VESTNIK ADVANCED TRAINING INSTITUTE OF THE MIA OF RUSSIA AU Grishkovets , A.. PY 2023 IS 0 PB All-Russian Advanced Training Institute of the Ministry of the Interior of the Russian Federation