Botti, M., L. Ragionieri, F. Gazza, L. B. Minelli, and R. Panu. “Immunohistochemical Characteristics of the Nerve Fibres of Sow Retractor Clitoridis Muscle”. Italian Journal of Anatomy and Embryology, vol. 1, no. 3, Dec. 2012, pp. 175-89, https://oajournals.fupress.net/index.php/ijae/article/view/1135.