Kumar, A. “Synthesis of 10-[7,11-(2,4 Di Substituted Phenyl)-3-Oxo-9-Aminoimino-2,4-Diazaspiro [5,5] Phenothiazine Derivatives As Anticonvulsant Activity”. International Journal of Pharmaceutical & Biological Archive, vol. 2, no. 1, Mar. 2011, http://ijpba.info/index.php/ijpba/article/view/193.