Delayed release of compound chitosan nano-microspheres PLGA/nHA control-releasing carrier systems
An Shi-chang, Sun Jian, Li Ya-li, Xu Yao-xiang, Wang Ke, Chen Li-qiang, Xiao Wen-lin
Chinese Journal of Tissue Engineering Research . 2011, (25): 4615 -4618 .  DOI: 10.3969/j.issn.1673-8225.2011.25.014