L. Fitriani, C. M. Azzahra, A. . Jessica, U. Hasanah, and E. Zaini, “Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization”, sci. technol. indones., vol. 9, no. 2, pp. 251–259, Apr. 2024.