Pawlicki, Stefan Zachariasz (1839–1916)
Kautsky, Karl (1854–1938)
Buisson, Ferdinand (1841–1932) Renard, Georges Francis (1847–1930) Séailles, Gabriel (1852–1923)
Garfein-Garski, Stanisław (1867–1928)
Buisson, Ferdinand (1841–1932)
Belmont, Leo (1865–1941)
Raciborski, Aleksander (1845–1920)
Jacques, Amédée Florent (1813–1865) Simon, Jules (1814–1896) Saisset, Émile Edmond
Kozłowski, Władysław Mieczysław (1858–1935)
Boutroux, Émile (1845–1921)