“DEVELOPMENT AND VALIDATION OF A RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF PROPRANOLOL HCl AND CLONAZEPAM IN BULK AND PHARMACEUTICAL DOSAGE FORM”. International Research Journal of Pharmacy, vol. 3, no. 9, Sept. 2012, pp. 213-7, https://irjponline.org/index.php/irjp/article/view/2863.