There are a few recent articles relevant to semi-presidentialism, most of them are country-specific publications.

Comparative:

1.) Electoral accountability and regime types, including semi-presidentialism - Timothy Hellwig and David Samuels, in British Journal of Political Science, vol. 38, pp. 65-90, 2008.

General regional or country-specific:

1.) Three articles on presidents and presidentialism in Africa, Journal of Democracy, vol. 18, no. 2, 2008.

2.) Finland - Tapio Raunio and Matti Wiberg on the changes to the relationship between the president and parliament in West European Politics, vol. 31, no. 3, 2008.

3.) Ukraine - Geir Flikke on the post-Orange revolution constitution in Ukraine in Europe-Asia Studies, vol. 60, no. 3, 2008.

Election reports:

1.) Algeria 2007 - Louisa Dris-Ait-Hamadouchea in Mediterranean Politics, vol. 13, no. 1, 2008.

2.) Armenia 2007 - Rubén Ruiz-Rufino in Electoral Studies, vol. 27, no. 2, 2008.

3.) Austria 2006 - Wolfgang C. Müller in Electoral Studies, vol. 27, no. 1, 2008.

4.) France 2007 - Jae-Jae Spoon in Electoral Studies, vol. 27, no. 1, 2008.

5.) Iceland 2007 - Ólafur Thordur Hardarson, Gunnar Helgi Kristinsson in Electoral Studies, vol. 27, no. 2, 2008.

6.) Ireland 2007 - Séan Ó Muineacháin, Michael Gallagher in Electoral Studies, vol. 27, no. 1, 2008.

7.) Kazakhstan 2007  - Rico Isaacs in Electoral Studies, vol. 27, no. 2, 2008.

8.) Mauritania 2006 and 2007 - Ahmed Aghrout in Electoral Studies, vol. 27, no. 2, 2008.

9.) Senegal 2007 - Penda Mbow in Journal of Democracy, vol. 19. no. 1, 2008.

10.) Serbia 2007 - Daniel Bochsler in Electoral Studies, vol. 27, no. 1, 2008.

11.) Slovakia 2006 - Tim Haughton and Marek Rybar in Journal of Communist Studies and Transition Politics, vol. 24, no. 2, 2008.

12.) Turkey 2007 - Gokhan Bacik in Electoral Studies, vol. 27, no. 2, 2008.

13.) Ukraine 2007 - Nathaniel Copsey in Journal of Communist Studies and Transition Politics, vol. 24, no. 2, 2008.

See further posts for other recent articles. Links are here, here, here and here!