Authors: Pietrobelli, CarloPorta, FernandoMoori-Koenig, VirginiaPublication Type: JournalJournal Name: PerspectivasVolume: 3Number: 2Page Numbers: 97-163Month/Season: DecemberPublished On: 2005Language: SpanishFocus AreasCountry: ArgentinaChileColombiaWeb Link: http://www.caf.com/media/3117/perspectivas3-vol2.pdf