Laundal, K. M., N. Olsen, C.C. Finlay, N. Ostgaard, P. Tenfjord, J.P. Reistad, K. Snekvik, Estimating statistical maps of Birkeland currents from Swarm magnetometer measurements represented in apex coordinates, 26th IUGG, General Assembly 2015, June 22-July 2, 2015, Prague, Czech Republic (Invited talk)
