Effects of chitosan-coated levodopa nanoliposomes on behaviour and levels of phosphorylated Mr 32 000 dopamine- and cyclic adenosine monophosphate-regulated phosphoprotein in rats with dyskinesia 
Wang Lei, Yan Dan, Xiao Hai-bing, Sun Sheng-gang, Xu Yan
Chinese Journal of Tissue Engineering Research . 2012, (12): 2125 -2128 .  DOI: 10.3969/j.issn.1673-8225.2012.12.008