TY JOUR TI KW foreign trade turnover KW Eurasian Economic Union KW average annual ruble rate KW sanctions KW Uniform requirements KW The Eurasian Economic Commission KW integration processes KW export of goods KW commodity markets KW import of goods JO MOSCOW ECONOMIC JOURNAL AU Chapkina, N.A. AU Mikaelyan, M.V. PY 2019 IS 4 PB Electronic science