%0 Journal Article %A Jean-Pierre Bérenger %T An implicit FDTD scheme for the propagation of VLF–LF radio waves in the Earth–ionosphere waveguide %J Comptes Rendus. Physique %D 2014 %P 393-402 %V 15 %N 5 %I Elsevier %R 10.1016/j.crhy.2014.05.002 %G en %F CRPHYS_2014__15_5_393_0