Ahmad , R., M. Asad, Z. N. Siddiqui, and A. kumar. “EVALUATION OF ANTIPYRETIC AND ANTINOCICEPTIVE POTENTIAL OF NEW HETEROCYCLIC DERIVATIVES OF 3-FORMYL-4-HYDROXYCOUMARIN IN RATS ”. International Research Journal of Pharmaceutical and Applied Sciences, Vol. 3, no. 5, Oct. 2013, pp. 253-9, https://scienztech.org/index.php/irjpas/article/view/558.