@misc{Volterra_Vito_(1860–1940)_Sulle_1887,
 author={Volterra, Vito (1860–1940)},
 volume={Vol. 1, 1881-1892},
 copyright={Public Domain},
 journal={Opere matematiche : memorie e note / Vito Volterra},
 address={Roma},
 howpublished={online},
 year={1887},
 publisher={Accademia Nazionale dei Lincei},
 language={ita},
 type={Text},
 title={Sulle equazioni differenziali lineari},
 URL={http://www.rcin.org.pl/impan/Content/147683/PDF/WA35_181806_11086-1_16.pdf},
}