Pimpanee Ngamsatien และ Nuttanan Sinchaipanid. (2015) Role of polyacrylic acid on drug release from controlled porosity osmotic pump using chitosan-polyacrylic acid complexes as polymeric osmogents. Mahidol University:ม.ป.ท.Pimpanee Ngamsatien และ Nuttanan Sinchaipanid. 2015. Role of polyacrylic acid on drug release from controlled porosity osmotic pump using chitosan-polyacrylic acid complexes as polymeric osmogents. ม.ป.ท.:Mahidol University;Pimpanee Ngamsatien และ Nuttanan Sinchaipanid. Role of polyacrylic acid on drug release from controlled porosity osmotic pump using chitosan-polyacrylic acid complexes as polymeric osmogents. ม.ป.ท.:Mahidol University, 2015. Print.