Rahisuddin, et al. “OPTIMIZATION AND CHARACTERIZATION OF AZELAIC ACID NANOEMULSION FOR ENHANCED TOPICAL DELIVERY: A POTENTIAL THERAPEUTIC APPROACH FOR SKIN HYPERPIGMENTATION DISORDERS ”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 29, no. 04, Nov. 2022, pp. 1808-25, https://doi.org/10.53555/jptcp.v29i04.4928.