?url_ver=Z39.88-2004&rft_id=10.1063%2F1.4774073&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S.&rft.aulast=Mahmood&rft.au=Mahmood%2C+S.&rft.date=2013&rft.title=Journal+of+Applied+Physics&rft.atitle=Field+emission+model+of+carbon+nanotubes+to+simulate+gas+breakdown+in+ionization+gas+sensor&rft.volume=113&rft.issn=00218979&rft.issue=2&rft.genre=article