@article{Ugarte-Urra:115,
      author        = "Ugarte-Urra, I. and Doyle, J.G. and Walsh, R.W. and
                       Madjarska, M.S.",
      title         = "{Electron density and filling factor along a coronal loop
                       observed with CDS/SoHO}",
      year          = "2005",
}