June 2009 - Paper accepted for presentation at the Summer Econometric Society Meeting in Boston (US)

June 2009 - Paper accepted for presentation at the Workshop "Industrial Organization: Theory, Empirics and Experiments", University of Salento in Lecce (Italy)

August 2009 - Paper accepted for presentation annual conference of the European Economic Association, Barcelona

September 2009 - Paper accepted for presentation at the 36th European Association for Research in Industrial Economics (EARIE) Conference, Ljubljana