@unpublished{Attanasio2003,
author = {Orazio Attanasio and Pinelopi K. Goldberg and Nina Pavcnik },
title = {Trade reforms and wage inequality in Colombia},
year = {2003},
month = {Apr},
volume = {pp},
issn = {1742-0415},
url = {http://www.ifs.org.uk/edepo/wps/ewp/0301.pdf},
}