@misc{Volterra_Vito_(1860–1940)_Contributo_1911,
 author={Volterra, Vito (1860–1940)},
 volume={Vol. 3, 1900-1913},
 copyright={Public Domain},
 address={Roma},
 journal={Opere matematiche : memorie e note / Vito Volterra},
 howpublished={online},
 year={1911},
 publisher={Accademia Nazionale dei Lincei},
 language={ita},
 title={Contributo allo studio delle funzioni permutabili},
 type={Text},
 URL={http://rcin.org.pl/Content/186256/PDF/WA35_218493_11086-3_29.pdf},
}