?url_ver=Z39.88-2004&rft_id=10.1108%2FCW-12-2019-0197&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=A.A.&rft.aulast=Stonier&rft.au=Stonier%2C+A.A.&rft.title=Circuit+World&rft.date=2021&rft.volume=47&rft.issn=03056120&rft.issue=1&rft.pages=117-127&rft.atitle=Investigation+and+validation+of+an+eleven+level+symmetric+modular+multilevel+inverter+using+grey+wolf+optimization+and+differential+evolution+control+algorithm+for+solar+PV+applications&rft.genre=article