publicaciones seleccionadas artículo Heterogeneity and the Formation of Risk-sharing Coalitions 2015 Inequality and Club Formation 2003 Conspicuous Consumption, Social Status and Clubs 2001 documento de trabajo Heterogeneity and the Formation of Risk-Sharing Coalitions 2011-09 Risk and Endogenous Formation of Risk-Sharing Coalitions 2009-09 Risk Endogenous Formation of Risk-Sharing Coalitions 2009-06 Inequality and Growth Clubs 2005-03 Inequality and Club Formation 2000