1. Pulsatile drug delivery systems using hydrogels;Yoshida;Adv. Drug Deliv. Rev.,1993
2. Biodegradable hydrogels in drug delivery;Kamath;Adv. Drug Deliv. Rev.,1993
3. Biodegradable Hydrogels For Drug Delivery;Park,1993
4. Smart Hydrogels;Park,1999
5. Intelligent Polymers;Hoffman,1997