@article{article2f737fbd,
title   = {Comprehensive spectroscopic study of nitrogenated carbon nanotubes},
author = {Droppa Junior, R. and Ribeiro, C. T. M. and Zanatta, Antonio Ricardo and Santos, M. C. and Alvarez, F.},
year = {2004},
doi = {10.1103/physrevb.69.045405},
journal   = {Physical Review B}
}