@article { Yaghoobi2009, title = {First-principles study of quantum tunneling from nanostructures: Current in a single-walled carbon nanotube electron source.}, journal = {Physical Review B}, volume = {80}, year = {2009}, month = {09/2009}, pages = {115422/1-115422/7}, author = {P. Yaghoobi and K. Walus and A. Nojeh} }