Sabry, Shereen A., et al. “GASTRORETENTIVE NIZATIDINE LOADING MICROBALLOONS FOR TREATMENT OF PEPTIC ULCER”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 11, Oct. 2015, pp. 220-5, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/7750.