4Brahma N. Singh,Kwon H. Kim.Floating drug delivery systems: an approach to oral controlled drug delivery via gastric retention[J].Journal of Controlled Release.2000(3)
5Ina Kr?gel,Roland Bodmeier.Floating or pulsatile drug delivery systems based on coated effervescent cores[J].International Journal of Pharmaceutics.1999(2)
6Vinod P. Shah,Yi Tsong,Pradeep Sathe,Jen-Pei Liu.In Vitro Dissolution Profile Comparison—Statistics and Analysis of the Similarity Factor, f2[J].Pharmaceutical Research.1998(6)