FORMATION OF ADDED VALUE AS AN INTEGRATION EFFECT OF CROSS-BORDER COOPERATION Authors O. Kopylyuk https://orcid.org/0000-0002-0977-1309 O. Muzychka https://orcid.org/0000-0003-2625-5741 A. Yurkiv https://orcid.org/0009-0007-5080-6546 N. Kopylyuk DOI: https://doi.org/10.32702/2307-2105.2026.4.60 Downloads pdf (Українська) Published 2026-04-23 Issue No. 4 (2026): Efektyvna ekonomika Section Статті