Opere Matematiche. Memorie e Note [Collected mathematical works. Memoirs and notes] (PDF), Volume primo (1893−1900), Pubblicate a cura dell'Accademia Nazionale
Collected Works of Edith Stein, Volume1, ICS Publications, 1986 On the Problem of Empathy, translated by Waltraut Stein, from The Collected Works of Edith
Collected Works of Karl Marx and Frederick Engels: Volume 7 (International Publishers: New York, 1977). Engels, Frederick and Marx, Karl, Collected Works of
Electrical World, Volume 39. 1902: 997 [2019-11-19]. (原始内容存档于2020-07-29). Journal of the Chemical Society of London, Volume 48, Part 1. London. 1885: 124