@misc{Vivanti_Giulio_(1859–1949)_VI._1895,
 author={Vivanti, Giulio (1859–1949)},
 editor={Peano, Giuseppe (1858–1932). Ed.},
 copyright={Public Domain},
 address={Turin},
 howpublished={online},
 year={1895},
 publisher={Bocca Frères},
 publisher={Ch. Clausen},
 language={fre},
 title={VI. Théorie des ensembles.},
 type={Text},
 URL={http://rcin.org.pl/Content/88570/PDF/WA35_114851_6452_Theorie.pdf},
}