1. Birkeland K 1908 On the cause of magnetic storms and the origin of terrestrial magnetism; In:The Norwegian Aurora Polaris expedition 1902-03 (ed) H Aschehoug, vol.I (Oslo, Norway)
2. Fredricks R W and Scarf F L 1973 Field aligned currents, plasma waves and anomalous resistivity in the disturbed polar cusp;J. Geophys. Res. 78 2133–2141
3. Galeev A A and Sagdeev R Z 1984 Current instabilities and anomalous resistivity of plasma; In:Hand book of plasma physics (eds) A A Galeev and R N Sudan, Vol.II (Amsterdam, North Holland) pp 271–303
4. Gurnett D A and Frank L A 1977 A region of intense plasma wave turbulence on auroral field lines;J. Geophys. Res. 82 1031–1050
5. Hasegawa A 1975 Plasma instabilities and nonlinear effects; In:Physics and Chemistry in space (eds) J G Roederer and J T Wasson Vol.VIII (NewYork: Springer) pp 62