@misc{Langevin_Paul_(1872–1946)_Sur_1950,
 author={Langevin, Paul (1872–1946)},
 copyright={Public Domain},
 address={Paris},
 howpublished={online},
 year={1950},
 publisher={CNRS},
 language={fre},
 type={Text},
 title={Sur les ions de l'atmosphère, C. R. Acad. Sci., 1905, 140, 232},
 URL={http://www.rcin.org.pl/impan/Content/194833/PDF/WA35_226694_8818_Art11.pdf},
}