@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 le rallentissement des neutrons, C. R. Acad, Sci., 1942, 214, 889},
 URL={http://rcin.org.pl/impan/Content/196587/PDF/WA35_226888_8818_Art47.pdf},
}