Cacciola, G., V. Filardi, P. Cavaliere, A. Pisani, A. Barbanera, M. Righi, C. Previti, and A. Favaloro. “Finite Element Analysis in Different Subtype of Sagittal Alignment”. Italian Journal of Anatomy and Embryology, vol. 122, no. 1, Oct. 2017, p. 39, https://oajournals.fupress.net/index.php/ijae/article/view/1767.