%0 Journal Article %T A new photocrosslinkable hydrogel based on a derivative of polyaspartic acid for the controlled release of ketoprofen %A Cao, Hui %A Ma, Xiaoyan %A Sun, Shaohua %A Su, Haijia %A Tan, Tianwei %J Polymer Bulletin %V 64 %N 6 %P 623-632 %@ 0170-0839 %D 2009-12-10 %I Springer-Verlag %~ DeepDyve