References
- Theeuwes F. Elementary osmotic pump. J. Pharm. Sci. 1975; 64: 1987–1991
- Verma R. K., Krishna D. M., Garg S. Formulation aspects in development of osmotically controlled oral drug delivery systems. J. Control. Release 2002; 79: 7–27
- Haslam J. L., Rork G. S. Controlled Porosity Osmotic Pump. U.S. Patent 4,880,631, November 14, 1989
- Zentner G. M., Rork G. S., Himmelstein K. J. Osmotic flow through controlled porosity films: an approach to delivery of water‐soluble compounds. J. Control. Release 1985; 2: 217–229
- Zentner G. M., Rork G. S., Himmelstein K. J. Controlled Porosity Osmotic Pump. U.S. Patent 4,968,507, November 6, 1990
- McClelland G. A., Sutton S. C., Engle K., Zentner G. M. The solubility‐modulated osmotic pump: in vitro/in vivo release of diltiazem hydrochloride. Pharm. Res. 1991; 8: 88–92
- Zentner G. M., McClelland G. A., Sutton S. C. Controlled porosity solubiltiy‐ and resin‐modulated osmotic drug delivery systems for release of diltiazem hydrochloride. J. Control. Release 1991; 16: 237–244
- Prabakaran D., Singh P., Kanaujia P., Vyas S. P. Effect of hydrophilic polymers on the release of diltiazem hydrochloride from elementary osmotic pumps. Int. J. Pharm. 2003; 259: 173–179
- Sood A., Panchagnula R. Drug release evaluation of diltiazem CR preparations. Int. J. Pharm. 1998; 95–107