Søraas, F., K. M. Laundal, and M. Usanova (2013), Coincident particle and optical observations of nightside subauroral proton precipitation, J. Geophys. Res, 118, 1, doi.org/10.1002/jgra.50172 (pdf)
Søraas, F., K. M. Laundal, and M. Usanova (2013), Coincident particle and optical observations of nightside subauroral proton precipitation, J. Geophys. Res, 118, 1, doi.org/10.1002/jgra.50172 (pdf)