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;
Sulzbacher, W., Baumjohann, W., Potemra, T. A., Nielsen, E., & Gustafsson, G. (1982). Observations of ionospheric and filed-aligned currents in the later afternoon sector with TRIAD and the Scandinavian magnetometer array. Journal Geophysical Research, 50, 55.