?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Perez%2C+RA&rft.aulast=Perez&rft.aufirst=RA&rft.pages=103-114&rft.volume=20&rft.atitle=Utilizing+Core-Shell+Fibrous+Collagen-Alginate+Hydrogel+Cell+Delivery+System+for+Bone+Tissue+Engineering&rft.title=TISSUE+ENGINEERING+PART+A&rft.issue=1-2&rft.date=1+January+2014&rft.issn=1937-335X&rft.genre=article