Noviza, Deni, Lili Fitriani, and Riana Zikra Fauzi. 2018. “Solid Dispersion of Usnic Acid Prepared by a Freeze Drying Technique Using Poloxamer 188 As the Polymer”. Jurnal Sains Farmasi & Klinis 5 (1):41-48. https://doi.org/10.25077/jsfk.5.1.41-48.2018.