@misc{Mansion_Paul_(1844–1919)_Calcul_1905,
 author={Mansion, Paul (1844–1919)},
 copyright={Public Domain},
 address={Paris},
 howpublished={online},
 year={1905},
 publisher={Gauthier-Villars},
 language={fre},
 type={Text},
 title={Calcul des probabilités : sa portée objective et ses principes. The front page and extras},
 URL={http://rcin.org.pl/Content/15002/PDF/WA35_30776_5325_Strona-tytulowa.pdf},
}