Vladimír, B., and M. Kullova. “Basal Cell Carcinoma of the Skin: Topographic Distribution and Clinicopathological Differences With Regards to the Extent of Sunlight Exposure”. Journal of Pakistan Association of Dermatologists, vol. 26, no. 4, Apr. 2017, pp. 310-7, https://www.jpad.com.pk/index.php/jpad/article/view/948.