Decuypere, F.A.G., P. Theunissen, and J. Straetmans. 2014. “Pilomatrixoma (calcifying Epithelioma of Malherbe)”. European Journal of Pediatric Dermatology 24 (2):82-85. https://ejpd.migration.pkpps03.publicknowledgeproject.org/index.php/journal/article/view/1001.