Khan, F., Razzak, M. S. M. I., Khan, M. Z. R., Azam, K. R., Sadat, S. M. A. and Reza, M. S. (2008) “Preparation and <i>In vitro</i> Evaluation of Theophylline Loaded Gastroretentive Floating Tablets of METHOCEL K4M”, Dhaka University Journal of Pharmaceutical Sciences, 7(1), pp. 65–70. doi: 10.3329/dujps.v7i1.1220.