„Effects of Castration on Epidural Administration of Lidocaine-Tramadol in West African Dwarf (Wad) Goats“. Nigerian Journal of Physiological Sciences, Bd. 34, Nr. 2, Dezember 2019, S. 141-7, https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/463.