6Choi BY,Park HJ,Hwang SJ,et al.Preparation of alginate beads forfloating drug delivery system effect of CO2 gas-forming agents[J].Int JPharm,2002,239(1/2):81-91.
7Sato Y,Kawashima Y,Takeuchi H,et al.In vivo evaluation of ri-boflavin-containing microballoons for floating controlled drug deliverysystem in healthy humans[J].Int J Pharm,2004,275(1/2):97-107.
8Sato Y,Kawashima Y,Takeuchi H,et al.In vivo evaluation of ri-boflavin-containing microballoons for floating controlled drug deliverysystem in healthy human volunteers[J].J Controll Release,2003,93(1):39-47.
9Atyabi F,Sharma HL,Mohammad HAH,et al.In vivo evaluation of anovel gastric retentive formulation based on ion exchange resins[J].J Con-trll Release,1996,42(2):105-113.
10Kar M,Reddy MS.Design and in vitro evaluation of floating drug de-livery system for an antipsychotic agent:a technical report[J].PDA JPharm Sci Technol,2006,60(6):389-394.
