1. A problem of fair division: Apportioning the European Parliament;Balinski,1976
2. Grosfeld, F., 1967, De kwadratuur van de democratische cirkelgang, Vrij Nederland, Dec. 30, p.4.
3. The law of cubic proportion in election results;Kendall;British Journal of Sociology,1950
4. Measuring power in weighted voting schemes;Lucas,1974
5. The elementary statistics of majority voting;Penrose;Journal of the Royal Statistical Society,1946