TY JOUR TI CONSTITUTIONAL AND LEGAL NATURE OF POWERS OF PUBLIC AUTHORITIES ON THE FEDERAL TERRITORY "SIRIUS" KW federal territory; public authorities; public legal entity; powers of public authorities; powers of the FT "Sirius"; powers of other public authorities exercised by the FT "Sirius"; competence-based KW functional KW hybrid interaction of public authorities FT "Sirius" JO Bulletin of the Kazan Law Institute of MIA Russia AU Fazlieva, L.K. PY 2024 IS 15 PB Kazan law institute Ministry of Internal Affairs Russian Federation