Persson, Torsten (contributor); … - 2006
difference.
Torsten Persson
Institute for International Economic Studies
Stockholm University
10691 Stockholm … event, as in
the estimation of a treatment effect.
Our sample has annual observations for about 150 countries and includes … Studies, Stockholm
University;LSE;CEPR;NBER;andCIAR.
Address: Institute for International Economics Studies, Stockholm Univer …