| 1.
| The impact of the 1999 education reform in Poland (English) | 2010/04/01 | WPS5263 | Policy Research Working Paper |
| 4.
| What drives firm productivity growth ? (English) | 2009/02/01 | WPS4841 | Policy Research Working Paper |
| 7.
| Road user charges : current practice and perspectives in Central and Eastern Europe (English) | 2008/11/01 | 46730 | Working Paper (Numbered Series) |