Methodology for developing optimal-system models to improve investment efficiency in regions: evidence from the Kashkadarya region. Международный научный журнал «Инженер», [S. l.], v. 4, n. 1, p. 44–52, 2026. DOI: 10.56143/3030-3893-2026-1-44-52. Disponível em: https://engineer.tstu.uz/index.php/engineer-tstu/article/view/294. Acesso em: 26 jul. 2026.