?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Ngoc+Bao&rft.aulast=Nguyen&rft.aufirst=Ngoc+Bao&rft.date=2006&rft.title=An+Approach+to+Estimate+Software+Cost+within+a+Narrow+Context&rft.genre=proceeding