TY JOUR TI ECONOMETRIC ANALYSIS OF MUTUAL TRADE VOLUMES OF BRICS MEMBER STATES KW BRICS KW mutual trade KW adaptive model KW exponential averages KW dummy variable KW forecast KW foreign trade turnover JO Science & World AU Sevrikova, A.V. AU Kiryakova, K.M. PY 2024 IS 0 PB LLC "Perspektiva"