1. Electromagnetic phenomena in a system moving with any velocity smaller than that of light;H Lorentz;Proceedings of the Royal Netherlands Academy of Arts and Sciences,1904
2. Sur la dynamique de l’electron;M Poincaré;Comptes Rendus de l’Acadamie des Sciences,1905
3. Sur la dynamique de l’electron;M Poincaré;Rendiconti del Circolo Matematico di Palermo (1884–1940),1906
4. First proposal of the universal speed of light by Voigt in 1887;A Ernst;Chinese Journal of Physics,2001
5. Henri Poincaré and Einstein’s theory of relativity;S Goldberg;American Journal of Physics,1967