THE ESSENCE OF CROSS-BORDER E-COMMERCE AND ITS ROLE IN THE TRANSFORMATION OF THE INTERNATIONAL TRADE SYSTEM Authors O. Marchuk https://orcid.org/0009-0001-8006-4789 DOI: https://doi.org/10.32702/2307-2105.2026.2.170 Downloads pdf (Українська) Published 2026-02-19 Issue No. 2 (2026): Efektyvna ekonomika Section Статті