@article{Arenal:60906,
      author        = "Arenal, R. and Stephan, O. and Kociak, M. and Taverna, D.
                       and Loiseau, A. and Colliex, C.",
      title         = "{Electron Energy Loss Spectroscopy Measurement of the
                       Optical Gaps on Individual Boron Nitride Single-Walled and
                       Multiwalled Nanotubes}",
      year          = "2005",
}