Wahyuni R, Lucida H, Revilla G, Ismed F, Zaini E. Preparation and Characterization of Usnic Acid Nanocrystals with the Wet Grinding Method Using a Planetary Ball Mill: http://www.doi.org/10.26538/tjnpr/v8i1.13. TJNPR [Internet]. 2024 Feb. 1 [cited 2024 Nov. 9];8(1):5801-5. Available from: https://tjnpr.org/index.php/home/article/view/3389