@Article{ Toledo-Redondo_Parrot_SALINAS:1-11,
author = { Sergio Toledo-Redondo and Michel Parrot and ALFONSO SALINAS EXTREMERA } ,
title = { Variation of the first cut-off frequency of the Earth-ionosphere waveguide observed by DEMETER },
journal = { Journal of Geophysical Research },
year = { 2012 },
volume = { 117 },
pages = { 1-11 },
}