Razzak, M. S. M. I.; Khan, F.; Khan, M. Z. R.; Fatema, K.; Islam, M. S.; Reza, M. S. Effect of Channeling Agents on the Release Profile of Theophylline from METHOCEL K4M Based Matrix Tablets. Dhaka Univ. J. Pharm. Sci 2008, 7, 27-32.