TY  - JOUR 
T1  - pH-sensitive polyvinylpyrrolidone-acrylic acid hydrogels: Impact of material parameters on swelling and drug release
JO  - Brazilian Journal of Pharmaceutical Sciences
A1  - Sohail, Kashif
A1  - Khan, Ikram Ullah
A1  - Shahzad, Yasser
A1  - Hussain, Talib
A1  - Ranjha, Nazar Muhammad
SN  - 1984-8250
UL  - 10.1590/S1984-82502011000100018
VL  - 50 
Y1  - 2014
PB  - Brazil 
ER  -