JAVOHIR HAMROQULOV. Operational efficiency, production costs, and firm-level economic performance: a unified framework. Journal of Production, Operations Management and Economics, [S. l.], v. 6, n. 1, p. 58–68, 2026. DOI: 10.55529/jpome.61.58.68. Disponível em: https://hmjournals.com/journal/index.php/JPOME/article/view/6484. Acesso em: 26 jul. 2026.