Jiménez F, Mondragón F, López D. Raman characterization of coal chars obtained in a pressurized bed reactor. inycomp [Internet]. 2012 Jul. 15 [cited 2024 Nov. 22];14(2):111-8. Available from: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/2659