Jagennath, S., G. M. Raj, and J. Mathaiyan. “Factors Influencing Plasma Concentrations of Phenytoin, Phenobarbitone, Carbamazepine and Sodium Valproate in Epileptic Patients Attending a Tertiary Care Hospital”. International Journal of Pharmaceutical Investigation, Vol. 9, no. 1, Mar. 2019, pp. 20-24, http://jpionline.org/index.php/ijpi/article/view/313.