@article {9236,
	title = {Incorporating protein gradient into electrospun nanofibers as scaffolds for tissue engineering},
	journal = {ACS Applied Materials and Interfaces},
	year = {2010},
	pages = {1025-1030},
	doi = {10.1021/am9007962},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/20423122},
	author = {Jian Shi and Li Wang and Fan Zhang and Hao Li and Lei Lei and Li Liu and Yong Chen}
}
