1. Straffin , Topics in the Theory of Voting, p. 25.
2. Straffin , Topics in the Theory of Voting, p. 26.
3. Richelson , ‘A Comparative Analysis of Social Choice Functions II’
4. General Conditions for Global Intransitivities in Formal Voting Models
5. Nurmi , ‘On the Properties of Voting Systems’, p. 26.