Preparation and characterization of chitosan nanoparticles/PLLA-PEG-PLLA composite microparticles by supercritical fluid technology
CHEN Aizheng, KANG Yongqiang, WANG Shibin, TANG Na, ZHAO Hui
CIESC Journal . 2015, (4): 1565 -1576 .  DOI: 10.11949/j.issn.0438-1157.20141349