1. A review of cellulose ethers in hydrophilic matrices for oral controlled-release dosage form;Alderman;Int. J. Pharm. Tech. Prod. Mfr.,1984
2. An in vivo investigation into the suitability of pH dependent polymers for colon targeting;Ashford;Int. J. Pharm.,1993
3. An in vitro investigation into the suitability of pH dependent polymers for colonic targeting;Ashford;Int. J. Pharm.,1993
4. Factors that influence dissolution testing;Banakar,1992
5. Measurement of Gastrointestinal pH profile in normal ambulant human subjects;Evans;Gut,1988