TY JOUR TI STATISTICAL ANALYSIS OF THE HIGH-TECH PRODUCTSSHARE IN THE RUSSIAN FEDERATIONGROSS DOMESTIC PRODUCT KW econometric model KW forecasting KW knowledge-intensive industry KW high-tech products KW regression KW correlation analysis JO Science & World AU Tsvil, M.M. AU Biryukova, E.A. PY 2025 IS 0 PB LLC "Perspektiva"