Kaminishi, Árthur Paulino Sanzo, et al. “Antinociceptive and Physiological Effects of Subcutaneously Administration of Fentanyl in Trachemyssp. (Testudines: Emydidae)”. International Journal of Advanced Engineering Research and Science, vol. 6, no. 11, Nov. 2019, https://journal-repository.com/index.php/ijaers/article/view/1314.