TY JOUR TI SOURCES OF COMPETITIVE ADVANTAGES IN THE MANAGEMENT OF REGIONAL ECONOMIC SYSTEMS KW key (core) competencies KW competitive advantages KW intangible assets KW region KW regional enterprises KW resources KW building industry JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Vinnik, A.E. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov