De Caro, R., A. Aprile, V. Macchi, and A. Porzionato. “Anatomical Bases of a Case of Retroperitoneal Haemorrhage”. Italian Journal of Anatomy and Embryology, vol. 121, no. 1, Oct. 2017, p. 72, https://oajournals.fupress.net/index.php/ijae/article/view/2210.