“Impacto De Investigaciones Sobre grafitización De Antracitas Durante Los años 1960-2018 Impact of Research on Anthracite Graphitization During the Years 1960 - 2018”. Journal Prospectiva 18, no. 1 (September 29, 2020). Accessed September 26, 2026. https://ojs.uac.edu.co/index.php/prospectiva/article/view/2087.