Chaiwiang, N., S. Pongpattanawut, N. Khorana, S. Thanoi, and T. Teaktong. “Role of Piperine in Cognitive Behavior and the Level of Nicotinic Receptors (nAChRs) in Mouse Brain”. Journal of Basic and Applied Pharmacology, vol. 38, no. 2, Dec. 2016, pp. 5-16, https://li01.tci-thaijo.org/index.php/JBAP/article/view/39665.