?url_ver=Z39.88-2004&rft_id=10.19026%2Frjaset.7.543&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K.&rft.aulast=Khan&rft.au=Khan%2C+K.&rft.title=Research+Journal+of+Applied+Sciences%2C+Engineering+and+Technology&rft.date=2014&rft.volume=7&rft.issn=20407459&rft.issue=12&rft.atitle=A+review+of+unsupervised+approaches+of+opinion+target+extraction+from+unstructured+reviews&rft.pages=2400-2410&rft.genre=article