@misc{Xavier_Agliberto_(1869–1952)_Théorie_1909,
 author={Xavier, Agliberto (1869–1952)},
 copyright={Public Domain},
 address={Paris},
 howpublished={online},
 year={1909},
 publisher={Guthier-Villars, Imprimeur-Libraire},
 language={fre},
 title={Théorie des approximations numériques et du calcul abrégé},
 type={Text},
}