Davor Boban, ““Minimalist” concepts of semi-presidentialism: are Ukraine and Slovenia semi-presidential states?”, in Politicka Misao. Comparative Studies, vol. 5, 2007, pp. 155-177.
Aleks Szczerbiak, “The Birth of a Bipolar Party System or a Referendum on a Polarizing Government? The October 2007 Polish Parliamentary Election”, in Journal of Communist Studies and Transition Politics, vol. 24, no. 3, 2008, pp. 415-443.
Anna Gwiazda, “The parliamentary election in Poland, October 2007”, Electoral Studies, vol. 27, 2008, pp. 760-764.
Virginie Baudais and Enrico Sborgi, “The presidential and parliamentary elections in Mali, April and July 2007”, Electoral Studies, vol. 27, 2008, pp. 769-773.
Miljenko Antic and Maja Dodic Gruicic, “The parliamentary election in Croatia, November 2007”, Electoral Studies, vol. 27, 2008, pp. 752-755.
Daniel Bochsler, “The presidential election in Serbia, January–February 2008”, Electoral Studies, vol. 27, 2008, pp. 745-748.
Thomas Remington, “Patronage and the Party of Power: President-Parliament Relations Under Vladimir Putin”, Europe-Asia Studies, vol. 60, no. 6, 2008, pp. 959-987.
Tanya Bagashka, “Invisible Politics: Institutional Incentives and Legislative Alignments in the Russian Duma, 1996–99”, Legislative Studies Quarterly, vol. 33, 2008, pp. 415-444.
Verena Fritz, “Mongolia: The Rise and Travails of a Deviant Democracy”, Democratization, vol. 15, no. 4, 2008, pp. 766-788.
Also, if you can read French, the journal Pouvoirs has made a number of its archived issues available for free. These include some interesting articles. For example:
Maurice Duverger, “Les monarchies républicaines”, Pouvoirs n° 78 – septembre 1996 – pp. 107-120.
Special issue on Who Governs France?: Pouvoirs n° 68 – 1994
Special issue on the Prime Minister: Pouvoirs n° 83 – 1997
Special issue on cohabitation: Pouvoirs n° 91 – 1999
Special issue on the New Republic: Pouvoirs n° 99 – 2001 with articles on the president etc.
Also, note that the Revue Française de Science Politique is also available free online from 1951-2002. This means there is access to some good articles on France. They include:
François Goguel, “Le référendum du 28 octobre et les élections des 18-25 novembre 1962”, 13:2, 1963.
Georges Vedel, “Vers le régime présidentiel?”, 14:1, 1964.
Articles by Duverger, Rudelle, Duhamel and Parodi, 34:4, 1984.
Ilan Greilsammer, “Cohabitation à la française, cohabitation à l’israélienne”, 39:1, 1989.
Jean-Luc Parodi, “Proportionnalisation périodique, cohabitation, atomisation partisane : un triple défi pour le régime semi-présidentiel de la Cinquième République, 47:3, 1997.