Laakso, Markku (1980). "Electoral Justice as a Criterion for Different Systems of Proportional Representation". Scandinavian Political Studies. Wiley. 3 (3): 249–264. doi:10.1111/j.1467-9477.1980.tb00248.x. ISSN0080-6757.
Koriyama, Y.; Macé, A.; Laslier, J.-F.; Treibich, R. (2013). "Optimal apportionment". Journal of Political Economy. 121 (3): 584–608. doi:10.1086/670380. S2CID10158811.
Moser, Robert G. (December 2004). "Mixed electoral systems and electoral system effects: controlled comparison and cross-national analysis". Electoral Studies. 23 (4): 575–599. doi:10.1016/S0261-3794(03)00056-8.
Massicotte, Louis (September 1999). "Mixed electoral systems: a conceptual and empirical survey". Electoral Studies. 18 (3): 341–366. doi:10.1016/S0261-3794(98)00063-8.
Hirczy de Miño, Wolfgang, University of Houston; Lane, John, State University of New York at Buffalo (1999). "Malta: STV in a two-party system"(PDF). สืบค้นเมื่อ 24 July 2014.
Laakso, Markku (1980). "Electoral Justice as a Criterion for Different Systems of Proportional Representation". Scandinavian Political Studies. Wiley. 3 (3): 249–264. doi:10.1111/j.1467-9477.1980.tb00248.x. ISSN0080-6757.