SIERRA GÓMEZ, C. O.; CAMARGO MAYORGA, D. A. Trade balance of steel industry in Colombia, 2009 – 2014. Cambios y permanencias, [S. l.], n. 7, p. 520–545, 2016. Disponível em: https://revistas.uis.edu.co/index.php/revistacyp/article/view/7063. Acesso em: 22 jul. 2024.