David, A., and I. Kaur. “Trachyonychia in a Child With Concomitant Alopecia Areata and Lichen Planus”. International Journal of Research in Dermatology, vol. 7, no. 2, Feb. 2021, pp. 306-9, doi:10.18203/issn.2455-4529.IntJResDermatol20210587.