Eswer, G. “Formulation and Evaluation of Atenolol Floating Tablets Using Different Polymers: Guargum, Sodium Alginate, Hpmc100cps and Carbopol940”. International Journal of Pharmaceutical & Biological Archive, vol. 2, no. 4, Sept. 2011, http://mail.ijpba.info/index.php/ijpba/article/view/348.