Lakshmi, A. B., N. S. Rao, B. Das, and B. V. S. Kartheek. “Proliferating Trichilemmal Tumour: A Case Report With Review of Literature”. International Journal of Research in Medical Sciences, vol. 2, no. 3, Jan. 2017, pp. 1223-5, https://www.msjonline.org/index.php/ijrms/article/view/2396.