?url_ver=Z39.88-2004&rft_id=10.1109%2FICCOINS.2014.6868450&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=S.M.&rft.aulast=Butt&rft.au=Butt%2C+S.M.&rft.date=2014&rft.title=Handling+tradeoffs+between+agile+and+usability+methods&rft.isbn=9781479943913&rft.genre=proceeding