Khongsombat, O., C. Patarapanich, M. H.Tantisira, and B. Tantisira. “Effects of Valproyl Urea on Neurons of The Cerebral Cortex and Cerebellar Purkinje Cells in Rats”. Journal of Basic and Applied Pharmacology, vol. 27, no. 2-3, Aug. 2015, pp. 91-101, https://li01.tci-thaijo.org/index.php/JBAP/article/view/36398.