Phiske, MM, et al. “Woolly Hair Nevus Arising on a Verrucous Epidermal Nevus, With Controlateral Persistent Pupillary Membrane”. European Journal of Pediatric Dermatology, vol. 16, no. 1, Mar. 2006, pp. 13-16, https://ejpd.migration.pkpps03.publicknowledgeproject.org/index.php/journal/article/view/384.