Ozdemir, Ercan. “The Pathophysiological Role of Serotonin Receptor Systems in Opioid Analgesia and Tolerance”. International Journal of Basic & Clinical Pharmacology 6, no. 2 (January 28, 2017): 217–228. Accessed November 13, 2025. https://www.ijbcp.com/index.php/ijbcp/article/view/1073.