1. A theory of magnetic storms and of the aurorae;Alfvén;Kungl. Svenska Vetenskapsakademiens Handlingar,1939
2. A theory of magnetic storms and of the aurorae, II. The aurorae, III. The magnetic disturbances;Alfvén;Kungl. Svenska Vetenskapsakademiens Handlingar,1940
3. Field-aligned current at 1100 km in the auroral region measured by satellite;Armstrong;J. Geophys. Res.,1970
4. Birkeland , K. The Norwegian Aurora Polaris Expedition 1902-1903 1 H. Aschehoug Christiania (now Oslo), Norway 1908
5. Effects of field-aligned currents on the structure of the ionosphere;Block;J. Geophys. Res.,1968