Elcey, C.D., and B. Manoj. “Graphitization of Coal by Bio-Solubilization: Structure Probe by Raman Spectroscopy”. Asian Journal of Chemistry 28, no. 7 (March 31, 2016): 1557–1560. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/28_7_29.