Nielsen, E. 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;
Schmidt, R., Nielsen, E., & Pedersen, A. (1984). Comparison of magnetospheric and ionospheric electric fields using different emperical mapping factors. In Achievements of an International Magnetospheric Study (IMS). Proceedings of an International Symposium, Gran 1984 (pp. 355).