1. Linear Probability: Logit and Probit Models;Aldrich,1984
2. A. Blais, ‘The Classification of Electoral Systems’, European Journal of Political Research, (in press).
3. Introduction;Bogdanor,1983
4. A Short History of Electoral Systems in Western Europe;Carstairs,1980
5. Political Parties: Their Organization and Activity in the Modern State;Duverger,1965