1. Barone, E. 1895. On a recent book by Wicksteed. Manuscript translated into English by Walker in Jaffé (1983), 182–186.
2. Barone, E. 1896. Studi sulla distribuzione. Giornale degli Economisti 12(February): 107–155, 235–252.
3. Bertrand, J. 1883. Théorie des richesses. Journal des Savants 67 (September): 499–508.
4. Cassel, G. 1903. Nature and necessity of interest. London: Macmillan.
5. Cassel, G. 1918. Theory of social economy. New York: Harcourt, 1932.