1. Space-charge regions above the aurora;Carlqvist;J. Geophys. Res.,1970
2. Haerendel G. E. Rieger A. Valenzuela H. Fopple H.C. Steinback- Nielsen E.M. Wescott First observation of electrostatic acceleration of barium ions into the magnetosphere European Programmes on Sounding-Rocket and Balloon Research in the Auroral Zone European Space Agency NeuillyFrance 1976
3. Triggeran active release experiment that stimulated auroral particle precipitation and wave emissions;Holmgren;J. Geophys. Res.,1979
4. Generation and propagation of a electromagnetic pulse in the Trigger experiment and its possible role in particle acceleration;Kelley;J. Geophys. Res.,1979
5. Rocket observations of stimulated electron acceleration associated with the Trigger experiment;Lundin;J. Geophys. Res.,1979