1. Electricity in the 17th and 18th Centuries;Heilbron,1979
2. Treatise on Electricity and Magnetism;Maxwell,1891
3. Remarques sur une expérience de M. Birkeland;Poincaré;Comptes Rendus,1896
4. Elements of the Mathematical Theory of Electricity and Magnetism;Thomson,1900
5. Dialectics of Nature;Engels,1940