Gandla, S., S. Chatterjee, A. Patil, and V. Rao. “Hidradenocarcinoma of Scalp: A Case Report and Review of Literature”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 3, no. 2, Mar. 2017, pp. 427-30, doi:10.18203/issn.2454-5929.ijohns20171205.