This paper builds a tractable partial equilibrium model in the spirit of Melitz (2003), which incorporates two dimensions of heterogeneity: firms specific productivity shocks and firm-market specific demand shocks. The structural parameters of interest are estimated using only cross-sectional...

This paper builds a tractable partial equilibrium model to help explain the role of trade preferences given to developing countries, as well as the efficacy of various subsidy policies. The model allows for firm level heterogeneity in demand and productivity and lets the mass of firms that enter...

Several Least-Developed Countries (LDCs) will graduate from the LDC status in the coming decade implying that they will lose preferential access to export markets. We quantify the expected impact of LDC graduation on exports of graduating and non-graduating LDCs incorporating detailed preference...