?url_ver=Z39.88-2004&rft_id=10.1109%2FICOS.2016.7881995&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Ullah%2C+R.&rft.aufirst=R.&rft.aulast=Ullah&rft.isbn=9781509026036&rft.title=Semantic+Space+Expansion+and+Refinement&rft.date=2017&rft.genre=proceeding