The Impact of Supply Chain Concentration on Operational Efficiency: An Intermediary Analysis Based on Inventory Management. Economics & Business Management, [S. l.], v. 5, n. 2, p. 131–142, 2026. DOI: 10.63313/EBM.9181. Disponível em: https://elibrary.erytis.com/index.php/Ebm/article/view/795. Acesso em: 7 may. 2026.