Tirino, V., M. La Noce, F. Paino, V. Desiderio, and G. Papaccio. “Methylation and Epigenetic Modification by 5’ Azacytidine and Valproic Acid Treatment Increase Stemness Attributes in Bone Sarcoma Cell Lines”. Italian Journal of Anatomy and Embryology, vol. 119, no. 1, Mar. 2015, p. 193, https://oajournals.fupress.net/index.php/ijae/article/view/2546.