Manjusha Martin, Anbumalar M , SadagopanKumaravel. “Comparative Study On The Efficacy Of Topical 20% Azelaic Acid And 4% Hydroquinone In Epidermal Melasma”. Annals of the Romanian Society for Cell Biology (December 30, 2020): 776–784. Accessed April 29, 2024. https://www.annalsofrscb.ro/index.php/journal/article/view/9724.