1. Sur les trajectoires des corpuscules electrisiés dans l'éspace sous l'action du magnetism terrestre;Störmer;Arch. Sci. Phys.,1907
2. On the trajectories of electrical particles in the field of a magnetic dipole with applications to the theory of cosmic radiation;Störmer;Avh. Norske Vid. Akad. Oslo Mat.-Nat. Kl.,1933
3. “The Polar Aurora”;Störmer,1955
4. A new theory of magnetic storms (sect. 6 and 7);Chapman;Terr. Magn. Atmos. Elec.,1931
5. A new theory of magnetic storms (sect. 8);Chapman;Terr. Magn. Atmos. Elec.,1932