@misc{Langevin_Paul_(1872–1946)_Note_1950,
 author={Langevin, Paul (1872–1946)},
 copyright={Public Domain},
 address={Paris},
 howpublished={online},
 year={1950},
 publisher={CNRS},
 language={fre},
 type={Text},
 title={Note sur les rayons secondaires des rayons de Roentgen, These et Ann. chimie et Physique, 1903, 28, 500},
 URL={http://rcin.org.pl./Content/194022/PDF/WA35_226684_8818_Art5.pdf},
}