Laios, K., M. M. Moschos, and G. Androutsos. “Herophilus of Chalcedon (ca. 330-250 BC) and Ocular Anatomy. A Review”. Italian Journal of Anatomy and Embryology, vol. 122, no. 2, Sept. 2017, pp. 151-4, https://oajournals.fupress.net/index.php/ijae/article/view/1600.