@article{alves_capaz_koiller_artacho_chacham_2002,  title={Ab initio studies of electromechanical effects in carbon nanotubes},  volume={32},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332002000200052},  DOI={10.1590/S0103-97332002000200052},  number={2a},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Alves, M. Verissimo and Capaz, R.B. and Koiller, Belita and Artacho, Emilio and Chacham, H.},  year={2002},  month={Jun},  pages={427–429} }