de Girolamo, P., C. Costagliola, C. Lucini, G. Gargiulo, and L. Castaldo. “The Autonomous Innervation of the Buffalo (Bubalus Bubalis) Testis. An Immunohistochemical Study”. European Journal of Histochemistry, vol. 47, no. 2, June 2009, pp. 159-64, doi:10.4081/822.