Akram, S., Sattar, F., Tahir, R., & Mujtaba, G. (2016). Efficacy of topical 4% liquiritin compared with topical 4% liquiritin mixed in 5% ascorbic acid in the treatment of melasma. Journal of Pakistan Association of Dermatologists, 23(2), 149–152. https://doi.org/10.66344/jpad.23.2.2013.298