Botti M, Gazza F, Ragionieri L, Bo Minelli L, Panu R. Double labelling immunohistochemistry on the sympathetic trunk ganglia neurons projecting to the extrinsic penile smooth musculature of the pig: an experimental study on the retractor penis muscle. Ital J Anat Embryol [Internet]. 2013 Aug. 5 [cited 2024 May 19];118(2):223-39. Available from: https://oajournals.fupress.net/index.php/ijae/article/view/1195