@unpublished{Attanasio2005,
author = {Orazio Attanasio and Costas Meghir and Ana Santiago},
title = {Education choices in Mexico: using a structural model and a randomised experiment to evaluate Progresa},
year = {2005},
month = {Apr},
volume = {pp.},
issn = {1742-0415},
url = {http://www.ifs.org.uk/edepo/wps/ewp0501.pdf},
}