Farias Goncalves, A. B., D. Meurer Missio, N. A. da Silva Quezada dos Santos, P. P. Farias Gonçalves, M. C. Issa, and M. Rachael. “Uncommon ‘Sleep Mask-Like’ Presentation of Lichen Planus Pigmentosum”. Journal of the Portuguese Society of Dermatology and Venereology, Vol. 76, no. 1, Apr. 2018, pp. 71-74, doi:10.29021/spdv.76.1.703.