1. The MACBETH approach: Basic ideas, software and an application;Bana e Costa,1999
2. Bana e Costa, C.A., Vansnick, J.C., 2001. A fundamental criticism to Saaty’s use of the eigenvalue procedure to derive priorities. LSE OR Working Paper 01.42. Downloadable via internet.
3. Bana e Costa, C.A., De Corte, J.M., Vansnick, J.C., 2003. MACBETH. LSE OR Working Paper 03.56. Downloadable via internet.
4. Approval Voting;Brams,1983
5. Voting Procedures;Brams,2002