Contributions by: Lee J. Alston, Marcus Andre Melo, Cristobal Aninat Urrejola, Mauricio Cárdenas, Maria Caridad Araujo, Rosa Amelia Gonzalez, Roberto Junguito, John Londregan, Fabrice Lehoucq, Andres Mejia Acosta, Jose Molinas, Francisco Monaldi, Marcela Montero, Bernardo Mueller, Benito Nacif, Patricio Navia, Gabriel Negretto, Richard Obuchi, Michael Penfold, Carlos Pereira, Anibal Perez-Linan, Sebastian Saiegh, Joaquin Vial