?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Nelson%2C+R.R.&rft.aulast=Nelson&rft.aufirst=R.R.&rft.issue=1&rft.volume=33&rft.date=1995&rft.issn=0022-0515&rft.atitle=Recent+evolutionary+theorizing+about+economic+change&rft.title=Journal+of+Economic+Literature&rft.pages=48-90&rft.genre=article