AUSAVASUKHI, A. ., T. . SIRIPHALA, W. . LIMPHIRAT, and S. . NILMOUNG. ‚ÄúLeonardite Humic Acid Activated carbon/MnO\(_{2}\) Composite Nanostructures for Supercapacitors‚ÄĚ. Journal of Metals, Materials and Minerals, vol. 34, no. 2, June 2024, p. 1932, doi:10.55713/jmmm.v34i2.1932.