Pyne, John, et al. “Squamous Cell Carcinoma: Variation on Dermatoscopy Vascular Features Between Well and Non-Well Differentiated Tumors”. Dermatology Practical & Conceptual, Oct. 2012, pp. 19-25, https://www.dpcj.org/index.php/dpc/article/view/dermatol-pract-concept-articleid-dp0204a05.