?url_ver=Z39.88-2004&rft_id=doi%3A10.4054%2FDemRes.2007.16.2&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Sanderson%2C+W.C.&rft.aulast=Sanderson&rft.aufirst=W.C.&rft.issue=2&rft.volume=16&rft.date=16+January+2007&rft.issn=1435-9871&rft.atitle=A+new+perspective+on+population+aging&rft.title=Demographic+Research&rft.pages=27-58&rft.genre=article