Uddin, Mohammad Borhan, et al. “Preparation and Evaluation of <i>In Vitro< I> Release Kinetics of Theophylline Loaded Matrix Tablet Based on Eudragit NE 30 D and Eudragit RS 30 D”. Dhaka University Journal of Pharmaceutical Sciences, vol. 8, no. 2, Sept. 2010, pp. 153-9, doi:10.3329/dujps.v8i2.6030.