PIÑERES, J.; BARRAZA, J.; BLANDON, A. Effect of air velocity, pH and frother concentration on vitrinite recovery using column flotation. Ingeniería y Competitividad, [S. l.], v. 15, n. 2, 2013. DOI: 10.25100/iyc.v15i2.2603. Disponível em: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/2603. Acesso em: 22 nov. 2024.