?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Mordukhovich%2C+B.S.&rft.aulast=Mordukhovich&rft.aufirst=B.S.&rft.date=2000&rft.issn=1096-0813&rft.atitle=An+abstract+extremal+principle+with+applications+to+welfare+economics&rft.title=Journal+of+Mathematical+Analysis+and+Applications&rft.pages=187-216&rft.genre=article