Di Prisco, María Cristina, Lluis Puig, y Agustín Alomar. 2009. «Contact Dermatitis Due to Para-Phenylenediamine (PPD) on a Temporal Tattoo With Henna. Cross Reaction to Azoic Dyes». Investigación Clínica 47 (3). https://mail.produccioncientificaluz.org/index.php/investigacion/article/view/28612.