?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=H.&rft.au=Sakidin%2C+H.&rft.aulast=Sakidin&rft.title=Malaysian+Journal+of+Mathematical+Sciences&rft.issue=1&rft.atitle=The+effect+of+UNBabc+mapping+function+modification+to+GPS+tropospheric+delay&rft.pages=59-71&rft.volume=2&rft.date=2008&rft.issn=18238343&rft.genre=article