?url_ver=Z39.88-2004&rft_id=10.1080%2F23311916.2015.1076983&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Khoa&rft.au=Khoa%2C+T.H.&rft.aufirst=T.H.&rft.date=2015&rft.title=Cogent+Engineering&rft.atitle=Solving+economic+dispatch+problem+with+valve-point+effects+using+swarm-based+mean%C3%A2%EF%BF%BD%EF%BF%BDvariance+mapping+optimization+(MVMOS)&rft.volume=2&rft.issn=23311916&rft.issue=1&rft.genre=article