Competitiveness of companies selling construction materials legally established in the city of Esteli, in 2015. Revista Científica Estelí, [S. l.], n. 16, p. 35–47, 2016. Disponível em: https://revistas.unan.edu.ni/index.php/Cientifica/article/view/2943. Acesso em: 7 aug. 2025.