Bertelli, Eugenio, and Marì Regoli. “Branching of the Foramen Rotundum. A Rare Variation of the Sphenoid”. Italian Journal of Anatomy and Embryology, vol. 119, no. 2, Nov. 2014, pp. 148-52, https://oajournals.fupress.net/index.php/ijae/article/view/1225.