?url_ver=Z39.88-2004&rft_id=10.1080%2F00319104.2013.795857&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M.&rft.aulast=Perumalsamy&rft.au=Perumalsamy%2C+M.&rft.atitle=Liquid-liquid+equilibrium+of+aqueous+two-phase+system+(PEG+2000-Sodium+Citrate-Water)+using+potential+difference+as+a+key+tool&rft.pages=26-36&rft.volume=52&rft.issn=00319104&rft.issue=1&rft.date=2014&rft.title=Physics+and+Chemistry+of+Liquids&rft.genre=article