Nielsen, Erling MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society; Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Zou, H., & Nielsen, E.(2004). Methods for obtaining electron density profiles from MARSIS ionograms and derivation of parameters characterizing the profiles (MPAe-W-485-04-01). Katlenburg-Lindau, Germany: Max-Planck-Institut für Aeronomie.