Graterol, I. ., H. . Finol, M. . Correnti, and M. . Ávila. “Ultrastructural Pathology of Vascular Endothelial in Patients With Premalignant and Malignant Cervix Lesions Infected With Papillomavirus”. Scientific Journal of Biological Sciences, vol. 2, no. 7, July 2013, pp. 145-51, http://sjournals.com/index.php/sjbs/article/view/1037.