TY JOUR TI TO THE QUESTION OF DEFINITION OF ECONOMIC EFFICIENCY OF RECONSTRUCTION OF REAL ESTATE OBJECTS KW Reconstruction KW economic efficiency KW economic analysis KW comparative effectiveness JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Avilova, I.P. AU Zharikov, I.S. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov