Laveleye, Emile de (1822–1892)

Kautsky, Karl (1854–1938)

Grabowski, Jan Eugeniusz (1897–1939)

Pawlicki, Stefan Zachariasz (1839–1916)

Haecker, Emil (1875–1934)

Perl, Feliks (1871–1927)

Krzeczkowski, Konstanty (1879–1939)

Böhm-Bawerk, Eugen von (1851–1914)

Barlicki, Norbert (1880–1941)

Bernstein, Eduard (1850–1932)

Milewski, Józef (1859–1916)

Dmochowski Jan (1877–1928)

Lewald, Michał

Krzywicki, Ludwik (1859–1941)

Kautsky, Karl (1854–1938)

Dawid, Jan Władysław (1859–1914)

Balicki, Zygmunt (1858–1916)

Gratry, Alphonse (1805–1872)

Perl, Feliks (1871–1927)

Kropotkin, Petr Alekseevič (1842–1921)